Normal, overpriced and lowered BT before critical days: we understand the nuances


One of the ways to better understand the processes occurring in a woman’s body is to monitor the basal temperature. This method will allow you to know when ovulation occurs, when menstruation goes, to suspect inflammatory processes, hormonal disorders, pregnancy and the threat of its interruption.

Its main advantage is the minimum financial costs, you need to buy only a thermometer. The disadvantages include high sensitivity to various factors. A reliable result can be obtained only with strict observance of all measurement rules.

The basal temperature depends on which hormones prevail in the woman’s body. From the beginning of the cycle to ovulation, the main estrogens, they contribute to its decline. After the release of the egg, progesterone plays a leading role, which raises the basal temperature.

Before ovulation, there is a jump in estrogen, which contributes to its reduction. However, this effect is not observed on all graphs. The basal temperature before menstruation also decreases slightly. This mainly occurs in a few days (an average of 3). This is explained by the fact that the amount of progesterone begins to fall.

Measurements are desirable to continue on critical days. Basal temperature during menstruation should normally gradually decrease. By their end, it drops to the level of the first phase.

Women who use this method are usually interested in what basal temperature during menstruation should be. Just want to note that this is very individual. Only by measuring for at least three cycles, you can answer this question.

Now will be given the values ​​that occur in most women. The basal temperature during menstruation usually falls from 37 degrees at the beginning to 36.4 at the end. This is due to an increase in the amount of estrogen and a drop in progesterone levels.

When plotting the graph on the horizontal axis, we postpone the days of the cycle, and on the vertical axis the temperature. On average, menstruation in women lasts 5 days, at this time there is a decline on the graph. Then during the first phase the basal temperature is between 36.4-36.6, then there may be a slight fall and a sharp rise. This suggests ovulation occurred. The second phase begins, during which the temperature stays at 37-37.2.

Then there is a drop to 37 degrees, which indicates an early menstruation. If this does not happen and the second phase lasts more than 18 days, then pregnancy can be suspected. If, after a fall, the basal temperature rises during menstruation, then this may be a sign of endometritis (inflammation of the uterine lining).

If the heat is kept during and before the menstruation, and falls only at its end, this may indicate a miscarriage. If it does not decrease, and the discharge is scarce, then pregnancy may be taking place with the threat of termination.

Normally, the second phase lasts exactly two weeks, its duration may vary within a couple of days. If it is less than 10 days, then it requires a hormonal examination and, possibly, treatment.

The length of the first phase has wider limits. Actually, the cycle duration depends on its duration. Very important is the difference in average temperatures in the phases. It should exceed 0.4.

Decoding of schedules should be done only by a qualified gynecologist. Based on these, treatment cannot be prescribed. It is very important to conduct a hormonal examination and folliculogenesis. During his ultrasound do several times per cycle. At the same time, they monitor the growth of the dominant follicle and the state of the endometrium. Evidence of ovulation is the formation of the corpus luteum and the presence of free fluid.

Basal temperature is usually measured in the anus immediately after waking up in the morning. On the charts it is necessary to note all the factors affecting it (sex, alcohol, drugs, insomnia, stress, which occur the day before).

Measurements are made clearly at the chosen time, for example, at 7 am. Permissible deviation - half an hour. Both electronic and mercury thermometers can be used. Measurements are carried out before the sound signal or 5 minutes, respectively.

So, the basal temperature during menstruation should gradually fall. For most women, this occurs from 37 to 36.4 degrees. If it is kept at a high level, then endometritis may be suspected.

A bit of theory

Basal temperature is the temperature that is influenced by the hormones that are fundamental for any woman. Gynecologists for several decades have given a serious role in the diagnosis of measurement of BT before menstruation. As a rule, physicians do not even look at the indicators themselves, but at their ratio in different phases of the cycle.

Measure correctly

The question of the accuracy of the measurements is very important. The fact is that poor compliance with the rules is fraught with unreliable results. Accordingly, such a schedule loses its meaning.

Measure basal temperature should be as follows:

  • Measurement time is the first factor. Every morning, at the same time. Plus - minus is not allowed.
  • "Measurements" should be done immediately after waking up, before the usual toilet and other usual actions.
  • At the time of measurement of the rectal temperature of sleep should be at least three hours.
  • The thermometer should “settle down” on the bedside table so as not to get up and move. Any physical activity "smears" the results of "research."
  • It is better if the thermometer will be the same throughout the entire measurement period.
  • The temperature is measured for five minutes at rest.
  • The data is recorded in the corresponding point of the graph for the day
  • The measurement table is carried out for several cycles (as a rule, three or four), so that the results are more or less stable.

Such graphics can help to understand the intricacies of the body. There are moments that radically change performance. Do not trust the results if:

  • the woman has catarrhal symptoms
  • there is physical fatigue
  • "Naughty" nerves
  • a lot of alcohol was drunk the night before the measurement
  • there was sex shortly before,
  • taking potent drugs.

All measurements need to be recorded. The degree scale should be marked from 36.0 to 37.5 ° C.

How the graph looks normal

In what looks like a normal schedule, doctors are guided by the testimony of the average twenty-eight day cycle. What is rectal temperature before menstruation?

The numbers will be approximately as follows:

  • the day before the end of the month the temperature will be about thirty-six and three,
  • the follicular phase, up to the middle of the cycle, should vary in the region of 36.3 - 36.9 ° С,
  • on “dangerous” days, the basal temperature is between 37.0 and 37.4 ° С,
  • and, finally, a couple of days before the next menstrual period, it drops again to 36.9 ° C.

Dependence of conception and ovulation on rectal temperature

The onset of the phase is the time when estrogens are produced with reduced intensity. This factor leads to an increase in rectal temperature. But these are not the most “dangerous” days that any woman planning a child is waiting for. On the contrary, it is almost unreal to conceive a baby at this moment.

If a woman’s cycle differs from the generally accepted one, the phase preceding the onset of temperature increases or becomes shorter, in this case the time favorable for the onset of pregnancy will last about two weeks (plus or minus a couple of days).

Delay rates

If the testimony of BT before menstruation is still high (more than 37 ° C), then, most likely, the hopes for pregnancy have come true. However, conclusions can be made only if the observation of the schedule has been going on for more than a month and the day before neither alcohol nor sexual feats occurred.

Almost always in favor of the accomplished conception speaks consistently high schedule for two or three weeks.

Rectal temperature before menstruation

What BT will be in each case, you can see by tracking the graph for a couple of cycles in a row. Traditionally, within a few days before menstruation, the temperature becomes lower. At the time of menstruation, it is usually 36.9 - 37.0 ° C.

We recommend reading the article on the onset of ovulation. From it you will learn about the development of the female egg, the beginning of ovulation and its duration, signs of onset and days favorable for conception.

Sign of trouble

As already mentioned, the schedule is able to give not only the approaching menstruation, but also the disease "as a woman."

The inflammatory process in the uterus will produce a high rectal temperature (more than 37 ° C). The difference from "pregnant" indicators is that a short-term "collapse" will occur before the increase in values.

Hormonal insufficiency will produce a slow (more than three days) increase in temperature. The difference will be less than 0.4 degrees. In addition, the second half of the phase will be shortened by several (up to 10) days. Monthly in this case usually come earlier, and the high temperature lasts about a week.

Does rectal temperature rise before menstruation? Not. But this factor can talk about the onset of conception. Especially if the “heat” lasts longer than 15 days, and the monthly ones are late.

The inflammatory processes in the appendages are reflected in such graphs as follows: during the follicular phase, the temperature rises to 37 ° C. These figures do not become lower before menstruation and during them.

If the dynamics of the basal temperature gives any problems with women's health, it is best not to torture yourself with conjectures, but to contact your doctor.

The idea of ​​diagnosing by a single basal temperature a possible pathology or the occurrence of pregnancy is a utopia. First, rectal temperature is a very capricious indicator that too many factors can affect. Secondly, the temperature "behavior" of many diseases is often very similar. And it is difficult, without being a specialist, to correctly diagnose oneself.

The essence of the method

Back in 1950, the role of sex hormones in the formation of body temperature in a woman was experimentally proved. The concentration of the estrogenic and gestagenic component of the hormonal background changes throughout the cycle. From the level of sex hormones depend on the processes of ovulation, the formation of the endometrium (the inner layer of the uterus) in the second phase. A sufficient number of them is important for the normal course of pregnancy, and a deficiency causes symptoms of a threat and detachment of the ovum.

Normally, an increase in the level of estrogen hormones leads to a decrease in metabolic processes and, accordingly, in the temperature of the pelvic organs, which is observed in the first phase of the cycle. Progesterone stimulates the center of thermoregulation, leading to a slight increase in the second phase. On the built-up curve, this is clearly expressed as a rise of half a degree or more.

What can you learn

For the accuracy of the data it is recommended to conduct a study for three or more cycles. Using the graph, you can determine the following:

  • Does ovulation occur (the release and maturation of the egg) and on which days
  • to identify the biphasic cycle or any deviations,
  • approximate level of estrogen and progestin hormone fraction,
  • infertility factor
  • when there will be monthly
  • did conception happen
  • identify the "safe" for intimate relationships days,
  • suspect inflammatory processes in the uterus.

When it is useful to use the method

The schedule can be built for everyone, for example, for contraception. BT on the day of ovulation will increase, at this time additional measures should be taken to protect against pregnancy. Change of BT is assigned for diagnostic purposes:

  • with problems with conception,
  • in case of doubtful pregnancy
  • in order to increase the likelihood of conception.

How to make research accurate

It is important to know how to measure and record the basal temperature correctly, especially if it is necessary to determine ovulation. In essence, this is the definition of metabolic rate and heat transfer in the pelvic organs. To obtain the most accurate data it is necessary to conduct a study in the rectum. So you can fix even the slightest fluctuations that can affect the result and the interpretation of data. It is also recommended to follow the rules:

  • rest for at least 3 hours right before the measurement,
  • refrain from intimate contact before measuring,
  • avoid stress
  • limit the use of spicy and highly salty foods,
  • monitor the normal functioning of the intestines,
  • use one thermometer (electronic or mercury).

How to perform

Measurement BT can begin at any convenient time - before menstruation, during or after them. Simple recommendations will help to get the most accurate result.

  • Where to measure. To solve gynecological problems, it is necessary to measure the temperature in the rectum. Other areas do not fit, the result will be biased.
  • On what days. It is necessary to determine the temperature on all days of the menstrual cycle. For fixing the results, a special schedule is used. No need to skip measurements on critical days.
  • What time. Optimally conduct research in the morning. Mandatory condition - three hours of rest. Even shaking the thermometer before the measurement is not recommended, especially to get up to the toilet or just out of bed. If the woman works at night, the measurement should be carried out after three hours of sleep during the day or even in the evening. In the chart table, it is desirable to make notes about such shifts. It is necessary to take measurements at the same time every day with a break of no more than one and a half to two hours.
  • How to prepare. If a girl begins to measure rectal temperature, she should take care that the thermometer lies near her bed every day, and she can, without getting out of bed, conduct an examination.
  • What weeks to measure. To obtain reliable information, it is necessary to conduct a study according to a plan for at least 10–12 weeks in a row (two to three months). Even in a normal woman, ovulation does not occur every month, especially after 35 years.
  • Which thermometer is better. A mercury thermometer is considered more accurate. It must first be brought down to the minimum readings in the evening in order not to take additional actions in the morning. Do not put a mercury thermometer under the pillow - it can be easily broken. The use of an electronic thermometer is allowed. It is easier and safer to handle it, but it can be somewhat inferior in accuracy.
  • How to fix the result. It is better to record readings immediately, without relying on your memory. Daily differences will be in tenths of a degree, so they can be easily confused. It is desirable to fix additional factors that could affect the result. For example, alcohol intake, relocation, illness, sleep disturbance.

Basal temperature indicators ideally

Normally, the curve looks like “gull wings in flight”. This is a figurative expression that doctors often use in their practice. In order to be able to clearly track changes on the chart, it is necessary to adhere to a number of conditions:

  • start from the first day of the bleeding,
  • daily schedule the parameters
  • as you fill the line,
  • find out the day of ovulation
  • additionally note the nature of the discharge,
  • You can use the developed software for data entry.

Exact filling of the schedule will help to make it as informative as possible. Feedback from women who have long been practicing the definition of rectal temperature, it is simple and does not require special medical knowledge. And to compare the obtained figures with the norm, you can use the following table.

Table - Important values ​​in the graph of BT and variants of the norm

Possible deviations

Independently difficult to conduct a deep analysis of the basal temperature graph, in case of violation of ovulation, it may have a non-standard appearance. Therefore, it is better to ask for a detailed transcript to the gynecologist, especially if there are any problems (with pregnancy, conception).

Doctors and women have to deal with the following deviations.

  • During critical days, readings are higher. It may be a double ovulation, but this is a rare phenomenon. Most often, an increase in rectal temperature above 37 ° C indicates a sluggish inflammatory process in the uterine cavity.
  • Increased BT values ​​for the first 14 days. If the reading is above 36.6 ° C, then the level of estrogen is not enough to lower it. As a result, the egg does not mature.
  • After ovulation, the rise is smooth, not sharp. This indicates the inferiority of the egg. She either does not have time to ripen, or she lacks the level of hormone emissions for full-fledged ovulation.
  • The second phase of the cycle is short. Normally, ovulation should take place at least 12-14 days before the onset of menstruation. The shortening of the period indicates a lack of hormonal support. Even if conception occurs at this time (the basal temperature schedule during pregnancy will also be with high numbers), the egg will not have enough hormonal support, and it will die. A duly prescribed “Duphaston” (artificial progestogen) will help preserve the pregnancy in such situations. Отзывы женщин, чье «чудо» появилось благодаря этому препарату, доказывают его эффективность.
  • Резкое падение, а затем небольшой подъем во второй фазе. Such "pits" are direct evidence of the sudden death of the egg.
  • Small difference in the average readings of the first and second phases. If there is a low basal temperature until the end of the cycle after ovulation, most likely the reason lies in the inadequate production of progesterone.
  • Temperature high / low throughout the cycle. If the normal difference between mean values ​​(0.4–0.6) is maintained, this can be an individual manifestation of elevated or lowered body temperature.
  • The peak temperature is shifted to the right or left. This can be observed with early (for example, 5-7 days) or late ovulation (21-23 days), the usefulness of such ovulation can be judged by the temperature jump. At the same time, the second phase of the cycle will be shortened or lengthened accordingly.
  • No rises at all. The absence of basal temperature peaks suggests that cycles without ovulation (anovulatory).
  • Against the background of taking estrogen-gestagen-containing tablets. It makes no sense to build a graph when using hormonal contraceptives, as they create anovulatory state in the body.

What changes are recorded during normal and pathological pregnancy

When constructing curves, the question of how and when to determine whether a pregnancy has occurred, by basal temperature, is always of interest. After all, tracking ovulation, most do it in order to increase the likelihood of conception.

How the basal temperature changes is important only if the early terms of pregnancy - in 1 trimester. In 2 and 3 trimesters, there are other diagnostic signs and more reliable studies. The following options are possible.

  • With a successful carrying. Normally, after conception, the basal temperature rises and remains elevated throughout the pregnancy, which is particularly noticeable in early pregnancy, when women even notice a rise in body temperature. Even before the delay, it will be possible to know that conception has happened. And it is absolutely not important how many fruits a woman bears: one, twins or more. After all, the curve shows relative, not absolute values. If the curve has already decreased, but there are no periods, the pregnancy is unlikely - this is a cycle failure.
  • With ectopic pregnancy. The graph affects the location of the ovum, and how intense the corpus luteum produces progesterone. Therefore, if the embryo develops without abnormalities, BT during ectopic pregnancy in the early stages will be the same as normal.
  • With missed abortion. On the eve of how the embryo stops developing further, a low basal temperature suddenly appears, which no longer rises during a given pregnancy.
  • With the threat of miscarriage. Often the cause of the threat is a lack of progesterone. In this case, the basal temperature during pregnancy will have a recession or a tendency to decrease. If the reason is different, then there may be no changes on the chart. If on the background of high basal temperature appeared bloody discharge, it is necessary to urgently consult a doctor.
  • Stimulation of ovulation with infertility. In this case, artificial hormonal background will create an ideal basal temperature curve before and after ovulation, including, further during pregnancy, if fertilization has occurred.

Thus, measuring rectal temperature is an affordable and simple method for tracking the functions of the female body. This test of functional diagnostics often helps to find out the problems of infertility, various endocrine disorders. The basal temperature during pregnancy before menstruation normally increases, and if fertilization does not occur, it decreases. If all recommendations are followed, this method is safer than any pregnancy test. It is informative and advisable to measure the temperature only up to 2 trimesters.

Measurement rules

To use BT as an informative indicator, it is necessary to observe temperature fluctuations during several menstrual cycles, at least three. Measurement rules:

  • it is better to measure the temperature rectally - so less is the effect of air temperature,
  • carry out the procedure every morning, including the days of menstruation,
  • before thermometry, one should not get up and engage in any activity; therefore, it is recommended that the thermometer be shot down and left at the bedside in the evening, when preparing for bed,
  • indicators are recorded in a notebook, and at the end of each cycle a graph is plotted (one scale is the day of the cycle, the second is the thermometer reading on that day),
  • thermometry time - 10 minutes
  • it is advisable to wake up at the same time every day,
  • sleep before measuring BT should last at least 6 hours,
  • lack of sleep, alcohol abuse, medication, cold can cause an increase in basal temperature, so these factors should be avoided.

As you can see, the method requires high motivation and discipline. However, if you have violated a rule, indicate this in the note to the corresponding day. If on this day the readings will be significantly out of the curve of the graph, they are not taken into account.

BT change during pregnancy

The increase in basal temperature during pregnancy is due to the work of the placenta. The placenta, the tissue that connects the organisms of the mother and the fetus, produces progesterone. Thus, although the corpus luteum is no longer active, the high temperature is maintained due to the activity of the placental progesterone.

Progesterone continues to be synthesized throughout almost the entire period of pregnancy, but usually the mother's body quickly adapts to this hormonal background, and the body temperature drops to its usual values.

Thus, if the temperature rises before the menstrual period of 37 C, and then the menstruation is delayed, pregnancy may be suspected. However, the fact that body temperature rises before menstruation is not sufficient to confirm the presence of pregnancy.

It should be noted that in the analysis of BT more important role is played by the difference in temperatures before, during, and after ovulation, and not the number on the thermometer per day before menstruation.

That is, if the temperature before menstruation is 36.9 C, and before ovulation was 36.7 C, this is less likely to indicate pregnancy than the testimony of 36.6 C before menstruation in a woman, which is characterized by a decrease in indications before ovulation up to 36.1 C.

In the first case, the difference is 0.2 C, and in the second - 0.5 C. This is why BT can be considered as a diagnostic sign only if a woman follows her constantly for several cycles.

Temperature increasing factors

Let's talk about the factors that can cause an increase in basal temperature in the second phase of the cycle, and, in fact, before menstruation.

An increase in basal temperature may also have external causes not related to the hormonal background:

  1. Inflammatory processes in the body - a viral or bacterial infection, the presence of a source of inflammation (boil, abscess). Symptoms may be mild, especially if the infection is in the initial stage or is sluggish in nature.
  2. Gynecological problems.
    For example, in women with endometriosis (inflammation of the mucous membrane of the uterus), body temperature rises before menstruation, and is usually 37.0-37.3 C.
  3. In some cases, the temperature rises with strong allergic reactions.
  4. The influence of external factors listed in the list of restrictions during the period of BT measurement. These include alcohol use, stress, intense physical activity and overwork, active sex, and drug use.

Thus, elevated body temperature a few days before menstruation is not a reliable sign of pregnancy.

  • BT is a good way to monitor the work of the female genital system,
  • method helps to identify hormonal disorders,
  • BT fluctuations throughout the cycle are caused by the work of the corpus luteum producing progesterone,
  • normally, in the absence of pregnancy, during the cycle, 2 drops of temperature are observed - before ovulation and before menstruation,
  • the highest BT is reached on the day of ovulation, when the egg cell breaks the follicle,
  • the absence of fluctuations in the schedule usually indicates the absence of ovulation,
  • during pregnancy, BT increases and may remain elevated for several months,
  • lack of premenstrual BT reduction is not a reliable sign of pregnancy.

We measure BT and build a graph

It is quite simple to measure the basal temperature: this method uses an ordinary thermometer. Only the temperature should be measured not in the armpit, but in the rectum, in the vagina or in the mouth. Measuring the temperature before menstruation, you can find out how soon the next menstruation will come. And, by the way, if ovulation occurred, in the period before menstruation, you can determine this.

But I wonder what the basal temperature (BT) before menstruation will be in the absence of pregnancy, with positive ovulation? What characterize the numbers on the thermometer? Let's take a look at the different situations and possible reasons for deviations from the generally accepted norms.

Basal temperature before menstruation 36.9 ° C and there are no jumps in the values ​​in the graph in the second half. This indicates the absence of a mature egg. This cycle was probably anovulatory. But this does not give grounds for a woman to diagnose “infertility”. Since even 20-25-year-old women with a good ovulatory reserve, such cycles can occur 2-3 times a year.

If a basal temperature before menstruation 37.0, 37.1, 37.2 degrees, this may indicate a pregnancy. And, most likely, the way it happened. And if the rise of BT was before the expected monthly, it is possible that there will be no more, at least in the next nine months.

Basal temperature before menstruation 37.3 ° С slightly higher than normal. Perhaps the discharge from the norm is associated with nerve overstrain, inflammatory processes in the body. It is advisable in this situation to consult with your doctor.

Basal temperature before menstruation 37.4 ° С often associated with estrogen deficiency. Get pregnant in a period of elevated basal temperature is unlikely to succeed. But to postpone the trip to the doctor is not worth it. A gynecologist may refer you to an endocrinologist. Perhaps planning a pregnancy will have to wait. It is important to identify the cause of such a high basal temperature.

If you decide to use this method when planning pregnancy to determine the possible reasons for the absence of conception or for, remember that a stable (for at least 3 menstrual cycles) increase in basal temperature before menstruation, as well as its decrease below 36.5 ° C are criteria that should not be overlooked. If you are trying to get pregnant, then any jumps on the temperature chart that you cannot understand should be explained by your gynecologist.

A change in basal temperature before menstruation is a normal physiological process. The fluctuation of the indicator may indicate the occurrence of a long-awaited pregnancy.

Measurement Method

The method of contraception, based on the study of basal temperature, has long been known. Applying it, it is possible to determine favorable days for conception and "safe" days in which pregnancy cannot occur. Changes in this temperature can signal problems with the female reproductive system.

Some of the fair sex consider it quite troublesome, ineffective, others - successfully used in their daily lives. Variable basal temperature indicators before menstruation will help to learn about pregnancy without the use of special tests.

It is important to record the basal temperature in the morning after waking up (in a calm environment). Measure it in the vagina, mouth or in the anus. Last place is considered the most convenient and reliable. To obtain the most reliable data you need:

  1. Measure the indicator daily at the same time after a full night's rest (do not evaluate the basal temperature before the monthly day).
  2. Removal of values ​​is carried out at least 5 minutes. During the whole measurement cycle it is important to use the same device (mercury or electronic).
  3. Be especially careful when drawing up an individual schedule: incorrect data will make the method unreliable, ineffective.
  4. Maximum exclude concomitant factors. There is information about the negative effect of alcohol consumption, short sleep, intimate relationships, stress, problems with the digestive tract.

The fluctuation of the value depends entirely on the phase of the cycle. Normal fluctuations in the index are as follows:

  1. During the initial cycle, the vaginal temperature should be 36.8 ° C. This temperature lasts until the release of the female reproductive cell from the ovary.
  2. The second stage is ovulation. The temperature will increase by 0.5-1 ° C. She will remain so until the most critical days. The causes of the jump in values ​​are progesterone, which is intensively released, and the preparation of the organism itself for probable fertilization. At this stage, the temperature is up to 37.5 ° C.
  3. At the end of the ICP, the magnitude of the value is significantly reduced. Regulatory consider the mark of 37 ° C.

Value of indicators

Based on this, we can conclude: a sharp rise in body temperature in the middle of the cycle indicates the onset of ovulation, its fall at the end on the eve of menstruation - the absence of pregnancy. Experts advise to observe the basal temperature fluctuations before menstruation (for a week). So you can exclude various pathologies.

  1. Starting from the first day of discharge, the values ​​slightly decrease to 36.8 ° C. This temperature is maintained until ovulation itself (comfortable values ​​for cell maturation in the ovaries).
  2. Increased temperature (more than 37 ° C) is noted below. A gradual increase in temperature over several days, or its stability, signaling problem ovulation.
  3. All subsequent period, the value is kept high (37 and above). A slight decrease in basal temperature before menstruation. Since the beginning of menstruation, the indicator has a mark of 37 ° C. The normalized values ​​in a healthy organism are graphically similar to gull wings. One wing shows the WT in the initial phase, is below the horizontal mark, the other - the values ​​of the next phase, therefore, is slightly higher.

For the treatment and prevention of problems with the menstrual cycle (amenorrhea, dysmenorrhea, menorrhagia, Opsomenorrhea, etc.) and vaginal dysbacteriosis, our readers successfully use the simple advice of the chief gynecologist Leyla Adamova. Having carefully studied this method, we decided to offer it to your attention.

When building the correct schedule, an ovulation line is traced, which indicates days favorable for conception. Before measuring the basal temperature, it is advisable to consult with your doctor about the rules of measurement. Over time, each woman will be able to independently lead and interpret a graph with a basal temperature value before menstruation and during a cycle.

Major pathologies

The most informative data carried in the morning. Another temperature is significantly different from this indicator. It is proved that the difference between them is significant. This figure reaches maximum values ​​during the day. This is explained by the fact that in the daytime half of the day all the processes, as well as the activity itself, have the maximum indicators.

The magnitude of the temperature is influenced by many reasons: physical activity, eating, psycho-emotional state. It is imperative to minimize their influence. Therefore, it is important to measure immediately after waking up, without getting out of bed. Taking certain medications (for example, hormonal medications) can significantly affect the plausibility of the data.

It is important to monitor not only the temperature index, but also the duration of the periods. You must visit the doctor in the following situations:

  • with an abnormal duration of periods (the first phase lasts 17 days, the other - 12),
  • with small fluctuations in the index
  • in the case of a decrease or a steady increase in temperature before menstruation,
  • with a slow rise in temperature before menstruation.

  1. Progesterone deficiency. It is characterized by a slow rise in values, a slight difference in them. Sometimes there is a shortening of the second phase.
  2. Endometritis is manifested by a slight decrease in data.
  3. Pregnancy happens when the temperature rises before menstruation, which can last 2 weeks, while menstruation does not occur.

Basal contraception is an effective way to plan a family, diagnose illnesses, inflammations, problems with conception.

Provided that all the measurement rules are met, this method is considered quite effective. For statement of the final diagnosis of one method described above is not enough. Therefore, it is impossible to diagnose and prescribe treatment independently, focusing only on temperature measurements. A comprehensive examination in a medical institution will help identify the pathology, and experienced specialists will prescribe the right treatment.

And a little about the secrets.

Have you ever suffered from problems with Menstrual cycle or other gynecological problems ? Judging by the fact that you are reading this article - the victory was not on your side. And of course you do not know firsthand what it is:

  • heavy or scanty clots
  • chest and lower back pain
  • pain while having sex
  • unpleasant smell
  • urination discomfort

And now answer the question: does it suit you? Is it possible to endure problems? And how much money have you already “leaked” to ineffective treatment? That's right - it's time to stop with this! Do you agree? That is why we decided to publish an interview with the chief gynecologist of Russia Leyla Adamova, in which she revealed the simple secret of normalizing the menstrual cycle. Read the article ...

Attention to health is the key to excellent well-being for many years. In many ways, this statement applies to women, because the activity of their body is completely controlled by hormones that are able to influence even the thermoregulation center. To understand the cyclical changes and in time to identify pathology will need to constantly measure the temperature.

What is the importance of the procedure?

Temperature measurement will help every woman easily, affordable to diagnose and monitor the processes in the body. Evaluation of the results allows to determine:

  • pregnancy,
  • favorable time for conception,
  • inflammation of the pelvic organs,
  • hormonal changes,
  • the onset of menstrual flow.

Determination of temperature can only be done with a medical thermometer. Measuring in the armpit will not be significant, because the results are influenced by many factors. The measurement is best done on the mucous membranes of the mouth, vagina or rectum.

It is necessary to carry out temperature measurements with one thermometer, which will help to avoid discrepancies in the results obtained. The measurement is best done in the rectum immediately after waking up. It is advisable not to talk and not open your eyes, so it is better to prepare the thermometer the night before. Measurements should be taken at the same time so that the readings are reliable. If the temperature is determined in the rectum or in the vagina, it will be enough for 3 minutes, in the mouth - 5 minutes.

It is important to remember that some factors, for example, relocation, medication and alcohol, diseases can lead to a distortion of the results.

What does the chart show?

Many processes that occur in the body can cause a decrease or increase in body temperature. It is associated with hormonal changes in certain phases of the menstrual cycle. The graph will allow to observe the dynamics of temperature changes. It is important to make the results daily. The graph will be a curve that is drawn by connecting the points together.

In the absence of pathologies on the curve, 3 stages will be clearly distinguished:

  1. Follicular phase. Lasts until ovulation occurs, the temperature should not exceed 36.4-36.7 ° C.
  2. Ovulation. It is characterized by a slight decrease in temperature, after the figure rises stepwise by half degrees. Such values ​​are usually kept throughout the luteal phase (about 16 days).
  3. When menstruation occurs, a basal temperature of 37 ° C is noted.

As a result, the indicator of basal temperature before menstruation should be in the range of 37.2 - 37.4 ° C. At the same time, only the temperature difference between the luteal and follicular phases, which is 0.4 ° C in the absence of pathologies, will be indicative of doctors.

Why can the temperature rise?

Normally, some women will have a high temperature before the onset of critical days, which is associated with an increase in progesterone production after ovulation. The hormone is able to influence the center of thermoregulation. In such a case, a slight increase in basal temperature is recorded in a woman 6-7 days before the onset of menstruation. With the onset of menstruation, the indicator returns to normal. This body reaction is quite normal and will not require special treatment.

If an increase in the basal temperature is not observed before the onset of menstruation, this may indicate the appearance of an immature egg. This cycle is called anovulatory, but this does not mean the development of pathology. It can occur in a healthy woman no more than 3 times a year.

Possible pathologies

Before menstruation, many gynecological diseases can develop. Experts attribute this to the opening of the cervix, which increases the risk of microbial contamination, and reduced immunity.

Schedule irregularities may indicate such processes:

  • . This process is accompanied by an increase in temperature within the follicular phase to 37 ° C, after which its decrease is noted. During the following phases, the indicator will also be increased in comparison with previous cycles. Before the onset of menstruation, the temperature rises to 40 ° C, there may be: abdominal cramps, which give to the rectum, nausea and vomiting, weakness. Conducting bimanual studies will determine pasty and painful appendages.
  • Endometriosis. Characterized by a decrease in temperature before menstrual flow, followed by an increase during menstruation to 37.3 ° C. The clinical picture: tachycardia (increased heart rate), chills, increased white blood cell count and ESR values. Possible violation of the chair and cramps in the lower abdomen. When viewed marked increase in the uterus, its pain.
  • Violations of the hormonal background. Estrogen deficiency can be suspected if there is a rise in basal temperature to 37.4 ° C. If you want to get pregnant, you will urgently need to see a specialist. A gradual increase in temperature in time will indicate insufficient progesterone production.
  • . In such cases, the temperature will rise to 37.0-37.2 ° C and the absence of menstruation. The occurrence of heavy scanty discharges during suspected menstrual periods may be indicative of the threat of miscarriage.
  • . There is a slight increase in temperature up to 37.4-37.6 ° C on the background of breast pain, headache, irritability.

Regular measurement of basal temperature will allow you to track any changes in the body. However, it is important to measure at a specific time, meeting basic requirements. This will allow to obtain accurate and reliable results. If violations are detected over several months, it is best to contact a specialist. This will help prevent the development of pathologies and increase the effectiveness of therapy.

Measurement of basal temperature (BT) is considered to be one of many favorite methods of pregnancy planning. Building up such a schedule from day to day, a woman is able to calculate “those very” intervals of the cycle when ovulation occurs, to learn ahead of schedule about the pregnancy and the coming menstruation. In addition, a certain pattern formed on the graph, is able to tell about the beginning of the inflammatory process in the reproductive organs. All these points can be tracked because rectal temperature is a direct indicator of hormone levels. How to do it right? What should be the rectal temperature before menstruation, if the body is in order?

The inflammatory processes in the appendages are reflected in such graphs as follows: during the follicular phase, the temperature rises to 37 ° C. These figures do not become lower before menstruation and during them.

If the dynamics of the basal temperature gives any problems with women's health, it is best not to torture yourself with conjectures, but to contact your doctor.

The idea of ​​diagnosing by a single basal temperature a possible pathology or the occurrence of pregnancy is a utopia. First, rectal temperature is a very capricious indicator that too many factors can affect. Secondly, the temperature "behavior" of many diseases is often very similar. And it is difficult, without being a specialist, to correctly diagnose oneself.

Among the many options for controlling the state of the reproductive system, the method stands out in particular, the main indicator of which is the basal temperature before menstruation. To use it, you need to take regular measurements and create a graph that will display the dynamics of the processes occurring in your body.

Experts say that it is she, and not absolute values, that is the most effective and allows you to diagnose many indicators. In addition, every woman should know about the onset of the ovulation period, when the probability of becoming pregnant will be highest.

It is worth having an idea about what the norm can be at a certain stage of the cycle, in order to be able to compare actual indicators with it.

We all know that the temperature of a person’s body is very important. However, we are used to measuring the index on the skin surface using the axillary area. There is another type of important temperature indicator - basal, that is, the level of heating of the mucous membranes. In contrast to the skin surface index, which should be as stable as possible, the basal temperature can vary significantly under the influence of various processes occurring in the human body.

If you look at the graph showing the results of its measurements for the female body, then you can see certain changes that are associated with ovulation and menstrual. They reflect the normal state of the reproductive system and abnormalities may indicate the presence of pathological processes. That is why the basal temperature before menstruation is so important.

There are three main ways to measure the basal temperature of the human body, using the following thermometer application points:

  • in the mouth - the area under the tongue,
  • in the vagina
  • in the rectum.

If you are tracking dynamics and want to build a graph that will display your reproductive health, you should constantly use the same measurement method.

In addition, the basal temperature should always be measured by the same thermometer. The use of other devices can lead to an error of 0.1-0.5 degrees, which will be mistakenly interpreted as pathology. If the device is damaged, lost, or cannot be used for another reason, it is worth buying a new one belonging to the same variety, for example, a digital or mercury thermometer of a similar model, to eliminate a strong drop in readings.

The basal temperature is necessarily measured in the morning, at rest - otherwise you can get a lot of distorted data, as a result of the influence on your physical activity. It is advisable to do this without getting out of bed, for which it is better to put a thermometer close by within reach of an outstretched hand. The schedule begins to build from the first day of the cycle, which helps to ease the task if necessary to compare indicators of different periods.

Remember that the basal temperature before menstruation and on other days of the cycle can be significantly distorted if you have been subjected to emotional stress, you have been too active in sports or have been subjected to other forms of physical and psychological stress. If you use oral contraceptives or other forms of hormonal drugs that affect the reproductive system of the body, measuring the indicator does not make sense, since the dynamics in any case will differ from the norm.

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Why do you need it?

The basal temperature before menstruation is most often recorded by those women who control the likelihood of becoming pregnant. In particular, she makes it clear when exactly ovulation occurs, and when to refrain from sexual contact if fertilization is undesirable. The knowledge of what probability of becoming pregnant exists at the present time is also used by those who are planning to replenish the family — moreover, it is necessary to make more intensive attempts to achieve the desired.

However, there is a medical use of this diagnostic method. If ovulation has to take place at a certain period of time, and the temperature analysis does not allow detecting it, this may be a manifestation of infertility, which is most often detected in this way. In addition, the measurement of basal temperature makes it clear what the likelihood is that in the female body now there are inflammatory processes covering the uterus, ovarian appendages and other important organs.

The schedule also allows you to predict the onset of menstruation, which is especially important when you need to make long trips, performing heavy physical work and in other cases. In addition, if abnormalities are detected during measurements, this may be a direct indication of a hormonal disorder that requires consultation with an endocrinologist.

To eliminate the possibility of a collision with any problems, it is better to periodically show the schedule to the gynecologist, who will point out certain anomalies and be able to use such data to conduct a more effective diagnosis.

Regulatory Indicators

Normal basal temperature before menstruation is evidence of the absence of any problems in the reproductive system of the body. However, as mentioned above, the dynamics of the indicator are much more important. During the menstruation, the temperature decreases slightly, and throughout the first stage of the cycle, also called follicular, the rate continues to decrease.

When a woman should have ovulation, the temperature of the last measurement drops immediately by 0.2 degrees, after which it rises sharply over the next 1-2 days. The entire luteal phase is kept at a similar temperature, which can reach short-term peaks of 37.5-37.6 degrees, which are replaced by a slight decrease in the rate over the next two to three days. Before menstruation, the temperature decreases again, and the cycle continues further according to the described scheme.

Major deviations

If the graph is relatively flat and the basal temperature immediately before the menstruation is set at 36.8-36.9 degrees, this indicates that a viable egg cell was not created in this cycle. However, do not worry, as this phenomenon is not necessarily a symptom of infertility - this is indicated only when the situation remains unchanged for three months. Most likely, the violation was caused by stress, diseases that do not affect the reproductive system, as well as medication (the probability of this is 95%).

An increase in the basal temperature before menstruation to the level of 37.4-37.6 means the flow in the body of serious pathological processes that may be associated with inflammation of the uterus or appendages.

In addition, these symptoms are characteristic of the lack of estrogen in the blood. In any case, getting pregnant will be very difficult or even impossible. Such an increase requires a mandatory consultation with the attending physician. If you ignore the symptoms for several months, the body may undergo irreversible changes.

If the graph shows a gradual increase in the basal temperature, which immediately before the menstruation is set at 37.0-37.2 degrees and continues to increase, this may indicate a successful pregnancy. In this case, the menstruation in the next 9 months can not be expected. Regardless of whether you started your period or not, you should seek help from a qualified specialist who will provide the exact answer.

Easily and quickly - we make the schedule of basal temperature before the monthly

Make it very simple - you will need only a piece of plain paper in the cell. In the horizontal direction, the days of the menstrual cycle are arranged in order, in the vertical direction, the readings obtained by measuring the basal temperature, where the cell corresponds to 1/10 of a degree. At 37 °, for clarity, it is better to draw horizontally a dividing line, which will serve as the boundary between the two main phases of the cycle. In the ideal description, the graphic image will look something like this:

1. From the first day of menstruation until the end of the discharge, the temperature indices gradually decrease to 36.3 ° - 36.6 °. In this range, they are up to ovulation, creating ideal conditions for successful maturation of the egg.

2The rapid jump in parameters above the 37 ° mark strongly indicates a successful ovulation. The lack of improvement, or the situation when its gradual increase stretches for 2-3 days, is a signal of the existing problems with ovulation. Perhaps, the egg cell is not ripe, or had time to die.

3. Throughout the period of the monthly cycle after successful ovulation, the basal temperature before menstruation exceeds 37 °, and only 2-3 days before the arrival of critical days begins to drop slightly. With the onset of menstruation, it reaches 37 °. If on the plotted graph, single declines in temperature below the designated horizontal line are clearly visible - alas, most likely, the egg cell has died.

The finished drawing, if all the values ​​do not go beyond the normalized frame and there are no pathological changes in the body, reminds of the wingspan of the gull's wings - one of them personifies the first phase and settles below the horizontal line, the second corresponds to the temperature indicators of the second phase and is slightly higher.

What signals the deviations of the basal temperature before the monthly

If conception did not happen, the last two or three days before the start of the menstrual flow, the rectal temperature indicators slightly decrease and do not exceed 37 degrees. If they are higher, it is possible, while still timidly, to rejoice at the onset of pregnancy, and a delay will be in favor of this. However, not only a happy event can change the basal temperature before menstruation. The addition of scanty, brownish discharge by type of menstruation can be a terrible sign of a possible ectopic pregnancy or a warning of the existing threat of miscarriage.

If there is acute inflammation in the appendages, a decrease in basal temperature before menstruation will not occur, and during critical days it will even rise to 37.3 - 37.5 °. Almost the same manifestations have endometritis, only a little bit allowing the temperature to drop before the appearance of discharge. An increase in basal temperature before menstruation to 37.4 ° sometimes serves as a manifestation of an insufficient level of estrogen. In this case, consultation with an endocrinologist will not interfere, and with the desired pregnancy you will have to wait a bit. The doctor will certainly ask what basal temperature was observed during the last cycles before the menstrual period, so her schedule will have to be as good as possible.

Any deviations from your usual temperature parameters in the direction of decreasing or increasing - the reason for the visit to the doctor. This applies to stable changes that have been observed for at least three cycles. It is possible that there is no need to worry, as the basal temperature depends on many different factors - excessive excitement, incorrect measurement, moving to another location, hypothermia, fatigue, etc. When diagnosing, the doctor not only analyzes what basal temperature was observed before menstruation. during the last cycles, but also takes into account an important nuance - the difference between the average values ​​of temperature in different phases. Experts believe that in the norm this figure should be 0.4-0.5 degrees. It is the anomaly of this parameter that reports pathology.

Basal temperature before menstruation - are the indicators reliable?

All admissible values ​​of what basal temperature before menstruation should be normal are based on morning measurements. It is on them that the doctors and the women themselves are guided, because the temperature obtained at a different time of day can differ quite significantly from the morning readings. The difference between the evening and morning indicators can make up a whole degree, and the basal temperature before the monthly day - to reach the maximum figures. This cannot be considered a pathology, since it is connected with the fact that any activity of the processes occurring in the body reaches its peak values ​​during the daytime. By taking measurements at the wrong time and comparing the results with what the basal temperature before menstruation should be according to standard indicators, you can get completely unpredictable results.

Immediately after waking up and performing even minimal actions, the body is influenced by a multitude of external conditions - psycho-emotional and physical exertion, food intake and many others. They are able to distort the evidence of basal temperature before the monthly day and prevent getting the correct schedule. They can not be avoided and taken into account when analyzing the graph, so for the reliability of the result, you should still measure the basal temperature before the monthly in the morning. It is also not necessary to use this method while taking hormonal drugs, the result will be obviously false. Inaccuracies can be caused by some other factors:

- travel and travel, especially long-distance,

- short or too long sleep (more than 12 hours),

- taking certain medications (a consultation with a doctor is desirable on this matter).

What is the basal temperature before menstruation is the reason for the visit to the gynecologist

It should be noted that the reason for visiting the doctor can be not only the temperature index, one should pay attention to the number and duration of both phases of the cycle. Do not neglect the advice of a specialist if:

- basal temperature is lowered, or vice versa, increased during the whole cycle and does not change before menstruation,

- in the second phase, the basal temperature before menstruation rose less than 0.4 °,

- there is not enough fast temperature rise in the middle of the cycle,

- there is an anomalous change in the temporal component of cyclic phases - the first should not last longer than 17 days, and the second should last less than twelve.

Measurement and analysis of basal temperature before menstruation give excellent results with reasonable planning of the desired family composition, comprehensive diagnosis of hormonal pathology and all sorts of inflammatory processes, detection and treatment of infertility. The effectiveness of the method is quite high, provided that you follow sufficiently strict rules for measuring and comparing data for at least three cycles. However, it is not worth it on your own, only on the basis of the obtained indications of basal temperature before menstruation, to make a diagnosis and, moreover, prescribe a treatment. This should be done by a specialist, he will also appoint an additional examination. Modern diagnostic methods are sufficient, and their reliability is beyond doubt, and the method of research using the basal temperature takes among them its worthy place.

Why measure basal temperature

Basal or rectal temperature (BT) - This is the body temperature at rest after at least 3-6 hours of sleep, the temperature is measured in the mouth, rectum or vagina. The temperature measured at this moment is almost not affected by environmental factors. Experience shows that many women perceive the requirements of the doctor to measure the basal temperature as a formality and the basal temperature does not solve anything, but this is far from the case.

The method of measuring basal body temperature was developed in 1953 by the English professor Marshal and belongs to research techniques that are based on the biological effect of sex hormones, namely on the hyperthermic (temperature increase) action of progesterone on the thermoregulation center. Measurement of basal body temperature is one of the main tests for the functional diagnosis of ovarian function. Based on the results of BT measurements, a graph is plotted, an analysis of basal temperature graphs is provided below.

Basal temperature measurement and scheduling is recommended in gynecology in the following cases:

If you are unsuccessfully trying to get pregnant during the year
If you suspect infertility in yourself or your partner
If your gynecologist suspects you have hormonal disorders

In addition to the above cases, when scheduling basal body temperature is recommended by a gynecologist, you can measure basal body temperature if:

Do you want to increase your chances of pregnancy?
Are you experimenting with child sex planning?
You want to monitor your body and understand the processes taking place in it (this can help you communicate with experts)

Experience shows that many women perceive the requirements of the doctor to measure the basal temperature as a formality and it does not solve anything.

In fact, by measuring the basal body temperature, you and the doctor can find out:

Whether the egg matures and when it occurs (respectively, highlight the "dangerous" days in order to protect or vice versa, the possibility of getting pregnant),
Did ovulation occur after maturation of the egg cell?
Determine the quality of your endocrine system
Suspect gynecological problems, such as endometritis
When to expect another menstruation
Has pregnancy occurred in case of a delay or unusual menstruation,
Assess how well the ovaries secrete hormones by the phases of the menstrual cycle,

The basal temperature chart, compiled according to all measurement rules, can show not only the presence of ovulation in the cycle or its absence, but also indicate the diseases of the sexual and endocrine system. You must measure the basal temperature for at least 3 cycles, so that the accumulated information during this time allows you to make accurate predictions about the expected ovulation date and the most favorable time of conception, as well as conclusions about hormonal disorders. An accurate assessment of your basal temperature chart can only be given by a specialist gynecologist. Scheduling a basal temperature can help the gynecologist determine abnormalities in the cycle and suggest the absence of ovulation, but the diagnosis made by the gynecologist only by the type of the basal temperature chart without additional tests and examinations most often indicates medical incompetence.

It is necessary to measure the basal temperature, and not the temperature of the body, according to Dmyshka. The general rise in temperature as a result of illness, overheating, physical exertion, eating, stress naturally affects the basal temperature and makes them unreliable.

Thermometer to measure basal temperature.

You will need a common medical thermometer: mercury or electronic. With a mercury thermometer, the basal temperature is measured for five minutes, while the electronic thermometer must be removed after the signal that the measurement is completed. After he squeaks, the temperature will still rise for a while, as the thermometer records the moment when the temperature rises already very slowly (and do not listen to the nonsense about the fact that the thermometer does not come into contact with the muscles of the anus). The thermometer must be prepared in advance, in the evening, putting it next to the bed. Do not put mercury thermometers under the pillow!

The table of recording the basal body temperature (BT) of the body should contain the lines:

Day of the month
Cycle day
Notes: Abundant or Mild discharge, abnormalities that can affect BT: general disease, including fever, diarrhea, intercourse in the evening (and even more in the morning), alcohol intake the day before, measurement of BT at an unusual time, late sleeping. (for example, lay down at 3 o'clock, and measured at 6), taking sleeping pills, stress, etc.

The column “Notes” contains all the factors that in one way or another could affect the change in basal temperature.

This form of writing helps the woman and her doctor very much to understand the possible causes of infertility, cycle disorders, etc.

Justification of the basal body temperature method

The basal body temperature in the continuation of the cycle changes under the influence of hormones.

During the maturation of the egg against the background of high estrogen levels (the first phase of the menstrual cycle, hypothermic, "low"), the basal temperature is low, on the eve of ovulation, it drops to its minimum, and then rises again, reaching a maximum. At this hour, and passes ovulation. After ovulation, the high temperature phase begins (second phase of the menstrual cycle, hyperthermic, “high”), which is caused by low estrogen levels and high progesterone levels. Pregnancy under the influence of progesterone also fully proceeds in the high temperature phase. The difference between the "low" (hypothermic) and "high" (hyperthermic) phases is 0.4-0.8 ° C. Only with accurate measurement of basal body temperature can you record the level of "low" temperature in the first half of the menstrual cycle, the transition from "low" to "high" on the day of ovulation, and the temperature level in the second phase of the cycle.

Usually during menstruation, the temperature is kept at 37 ° C. During the period of maturation of the follicle (the first phase of the cycle), the temperature does not exceed 37 ° C. Before ovulation, it decreases (the result of estrogen), and after it the basal temperature rises to 37.1 ° C and higher (the effect of progesterone). Until the next menstruation, the basal temperature is elevated and decreases slightly by the first day of menstruation. If the basal temperature indicators in the first phase, relatively second, are high, then this may indicate a small amount of estrogen in the body and requires correction with drugs containing female sex hormones. On the contrary, if in the second phase, relative to the first, a low basal temperature is observed, then this is an indicator of a low level of progesterone and here also preparations for the correction of hormonal background are prescribed. It is necessary to do this only after passing the appropriate hormone tests and doctor's prescriptions.

A stable two-phase cycle indicates ovulation, which was realized and the presence of a functionally active yellow body (the correct rhythm of the ovaries).
The absence of temperature rise in the second phase of the cycle (monotonous curve) or significant temperature swings, both in the first and in the second half of the cycle with the absence of a stable rise indicates inoculation (no release of the egg from the ovaries).
Lateness of the rise and its short duration (hypothermic phase for 2-7, up to 10 days) is observed with shortening of the luteal phase, insufficient rise (0.2-0.3 ° C) - with insufficient functioning of the corpus luteum.
The thermogenic effect of progesterone leads to an increase in body temperature of at least 0.33 ° C (the effect lasts until the end of the luteal, that is, the second, phase of the menstrual cycle). Progesterone levels peak at 8–9 days after ovulation, which roughly corresponds to the time of implantation of a fertilized egg to the uterine wall.

By compiling a basal temperature chart, you can not only determine when you are ovulating, but also find out what processes are taking place in your body.

Overlap line

The line is drawn over 6 temperature values ​​in the first phase of the cycle, preceding ovulation.

It does not take into account the first 5 days of the cycle, as well as days on which various negative factors could affect the temperature (see temperature measurement rules). This line does not allow to draw any conclusions from the graph and serves only for clarity.

Ovulation line

In order to judge the occurrence of ovulation, the rules established by the World Health Organization (WHO) are used:

Three temperature values ​​in a row should be above the level of the line drawn over the 6 previous temperature values.
The difference between the middle line and the three temperature values ​​should be at least 0.1 degrees in two days out of three and at least 0.2 degrees in one of these days.

If your temperature curve responded to these requirements, then an ovulation line will appear on your basal temperature chart 1-2 days after ovulation.

Sometimes it is not possible to determine ovulation by the WHO method due to the fact that there are high temperatures in the first phase of the cycle. In this case, you can apply a “finger” rule to the basal temperature chart. This rule excludes temperature values ​​that differ from the previous or subsequent temperature by more than 0.2 degrees. Such temperature values ​​should not be taken into account when calculating ovulation, if in general The basal temperature chart is normal.

The best time for conception is considered the day of ovulation and 2 days before it.

Second phase length

The basal temperature graph is divided into the first and second phases. The separation takes place where the ovulation line (vertical) is affixed. Accordingly, the first phase of the cycle is the segment of the graph before ovulation, and the second phase of the cycle after ovulation.

The length of the second phase of the cycle is normally from 12 to 16 days, most often 14 days. In contrast, the length of the first phase can vary greatly and these variations are an individual norm. At the same time, in a healthy woman in different cycles there should be no significant differences in the length of the first phase and the second phase. The total cycle length is normally changed only by the length of the first phase.

Одна из проблем выявляемая на графиках и подтверждаемая последующими гормональными исследованиями - это недостаточность второй фазы. Если Вы на протяжении нескольких циклов измеряете базальную температуру, соблюдая все правила измерения и Ваша вторая фаза короче 10 дней, это - повод для консультации с гинекологом. Also, if you regularly have intercourse during ovulation, pregnancy does not occur and the length of the second phase is at the lower limit (10 or 11 days), then this may indicate a deficiency of the second phase.

Temperature difference

Normally, the difference in average temperatures of the first and second phases should be more than 0.4 degrees. If it is lower, then this may indicate hormonal problems. Take a blood test for progesterone and estrogen and consult a gynecologist.

An increase in basal temperature occurs when the level of progesterone in the serum exceeds 2.5-4.0 ng / ml (7.6-12.7 nmol / l). However, monophasic basal temperature was detected in a number of patients with normal levels of progesterone in the second phase of the cycle. In addition, the monophasic basal temperature was observed at approximately 20% ovulatory cycles. A simple statement of a two-phase basal temperature does not prove the normal function of the corpus luteum. The basal temperature also cannot be used to determine the time of the onset of ovulation, since a two-phase basal temperature is observed during the luteinization of a neovulatory follicle. Nevertheless, the duration of the luteal phase in accordance with the data of the basal temperature and the low rate of rise in the basal temperature after ovulation are accepted by many authors as criteria for diagnosing the luteinization syndrome of a neovulatory follicle.

The classical gynecology manuals describe five basic types of temperature curves.

Normal biphasic cycle for basal temperature schedule

Such graphs show a temperature rise in the second phase of the cycle by at least 0.4 ° C, a noticeably “preovulatory” and “premenstrual” temperature drop. The duration of the temperature increase after ovulation is 12-14 days. Such a curve is typical for a normal two-phase menstrual cycle.

On the example of the graph, one can see pre-ovulatory depression on the 12th day of the cycle (the temperature drops significantly two days before ovulation), as well as a premenstrual fall, starting from the 26th day of the cycle.

Estrogen-progesterone deficiency

There is a slight increase in temperature in the second phase. The temperature difference in the first and second phase is no more than 0.2-0.3 C. This curve may indicate estrogen-progesterone deficiency. Examples of graphs, see below.

If such graphs are repeated from cycle to cycle, then this may indicate hormonal disruptions that cause infertility.

The basal temperature begins to rise only shortly before menstruation, while there is no “premenstrual” temperature drop. The second phase of the cycle may take less than 10 days. This curve is characteristic of a two-phase menstrual cycle with a second phase failure. Examples of graphs, see below.

Pregnancy in such a cycle is possible, but it is under threat from the very beginning. At this point, a woman cannot yet know about the onset of pregnancy, even gynecologists would have difficulty making a diagnosis at such an early stage. With this schedule, we can talk not about infertility, but about miscarriage. Be sure to contact your gynecologist if such a schedule is repeated for 3 cycles.

In a cycle without ovulation, the corpus luteum is not formed, which produces the hormone progesterone and affects the increase in basal body temperature. In this case, the temperature rise is not visible on the graph of basal temperature and ovulation is not detected. If the ovulation line on the graph is missing, in this case we are talking about the anovulatory cycle.

Each woman may have several anovulatory cycles per year - this is normal and does not require medical intervention, but if this situation repeats from cycle to cycle, then be sure to consult a gynecologist. Without ovulation - pregnancy is impossible!

A monotone curve occurs when there is no marked rise throughout the cycle. Such a schedule is observed with anovulatory (no ovulation) cycle. Examples of graphs, see below.

On average, a woman has one anovulatory cycle per year, and there is no cause for concern. But anovulatory graphics, which are repeated from cycle to cycle, are a very serious reason to contact a gynecologist. Without ovulation, a woman cannot become pregnant and we are talking about female infertility.

Estrogen deficiency

Chaotic temperature curve. The graph shows a large range of temperature, it does not fit into any of the above types. This type of curve can be observed as in severe estrogen deficiency, and depend on random factors. Examples of graphs below.

A competent gynecologist will definitely require testing for hormones and will conduct an ultrasound study before prescribing medications.

Estrogen deficiency

In the first phase of the cycle, the hormone estrogen dominates in the female body. Under the influence of this hormone, the basal temperature until ovulation is kept on average from 36.2 to 36.5 degrees. If the temperature in the first phase rises and keeps above this mark, then it can be assumed that estrogen is deficient. In this case, the average temperature of the first phase rises to 36.5 - 36.8 degrees and is kept at this level. To increase the level of estrogen gynecologists-endocrinologists prescribe hormonal drugs.

Estrogen deficiency also leads to an elevated temperature in the second phase of the cycle (above the mark of 37.1 degrees), while the temperature rise is delayed and takes more than 3 days.

On the example of a graph, the temperature in the first phase is above 37.0 degrees, in the second phase it rises to 37.5, the temperature rise by 0.2 degrees on the 17th and 18th day of the cycle is insignificant. Fertilization in a cycle with such a schedule is very problematic.

Inflammation of the appendages

Another reason for the increase in temperature in the first phase may be inflammation of the appendages. In this case, the temperature rises only for a few days in the first phase to 37 degrees, and then drops again. In such graphs, the calculation of ovulation is difficult, since such a rise "masks" the ovulatory rise.

Using the graph as an example, the temperature in the first phase of the cycle is kept at 37.0 degrees, the increase occurs sharply and also drops sharply. The rise in temperature on the 6th day of the cycle can be mistaken for an ovulatory rise, but in reality it most likely indicates inflammation. Therefore, it is so important to measure the temperature throughout the cycle in order to exclude such a scenario: the temperature rose due to inflammation, then dropped again and then rose due to the onset of ovulation.


Normally, the temperature in the first phase should decrease during menstrual bleeding. If your temperature at the end of the cycle drops to the beginning of the menstrual period and again rises to 37.0 degrees with the onset of menstruation (less often on the 2-3 day of the cycle), then this may indicate the presence of endometritis.

Characteristic decline in temperature before menstruation and the rise from the beginning of the next cycle. If the temperature drops before the onset of menstruation in the first cycle, there is no, that is, the temperature stays at this level, then pregnancy can be assumed, despite the onset of bleeding. Make a pregnancy test and consult a gynecologist who will conduct an ultrasound for an accurate diagnosis.

Special cases of the basal temperature chart

If the basal temperature in the first phase rises sharply by one day, then this does not mean anything. Inflammation of the appendages cannot begin and end in one day. Also, the lack of estrogen can be assumed only by evaluating the entire schedule, rather than a separate temperature in the first phase. For diseases accompanied by high or elevated body temperature, it does not make sense to measure the basal temperature, and even more so to judge its nature and analyze the schedule.

Low temperature in the second phase of the menstrual cycle

In the second phase of the cycle, the basal temperature should be significantly (about 0.4 degrees) different from the first phase and be at 37.0 degrees or higher if you measure the temperature rectally. If the temperature difference is less than 0.4 degrees and the average temperature of the second phase does not reach 36.8 degrees, this may indicate a problem.

Lack of a yellow body

In the second phase of the cycle, the hormone progesterone or the hormone of the corpus luteum begins to be produced in the female body. This hormone is responsible for the temperature rise in the second phase of the cycle and prevents the onset of menses. If this hormone is not enough, the temperature rises slowly and the ensuing pregnancy may be at risk.

The temperature in case of insufficiency of the corpus luteum rises shortly before menstruation, and there is no “premenstrual” fall. This may indicate hormonal deficiency. The diagnosis is made on the basis of a blood test for progesterone in the second phase of the cycle. If its values ​​are lowered, then the gynecologist usually prescribes a progesterone substitute: utrogestan or duphaston. These drugs are taken strictly after the onset of ovulation. With the onset of pregnancy, admission lasts up to 10-12 weeks. Abrupt cancellation of progesterone in the second phase with the onset of pregnancy can lead to the threat of termination of pregnancy.

Special attention should be paid to graphics with a short second phase. If the second phase is shorter than 10 days, then we can also judge the insufficiency of the second phase.

Situations where the basal temperature remains elevated for more than 14 days, occurs when pregnancy occurs, the formation of a cyst of the corpus luteum of the ovary, as well as in acute inflammatory process of the pelvic organs.


Due to an increase in the level of the pituitary hormone - prolactin, which is responsible for maintaining pregnancy and lactation, the basal temperature schedule in this case may resemble the schedule of a pregnant woman. Menstruation as well as during pregnancy may be absent. An example of basal temperature in patients with hyperprolactinemia

Graph of basal temperature during ovulation stimulation

When ovulation is stimulated, in particular by clomiphene (clostilbegit) using duphaston in the second phase of the MC, the basal temperature graph usually becomes “normal” - two-phase, with a pronounced phase transition, with a rather high temperature in the second phase, with characteristic “steps” (the temperature rises 2 times) and a slight depression. If the temperature schedule during stimulation, on the contrary, is disturbed and deviates from the normal, this may indicate a wrong dosage of drugs or an inappropriate stimulation scenario (other medications may be needed). An increase in temperature in the first phase during stimulation with clomiphene can also occur with individual sensitivity to the drug.

When to contact a gynecologist?

If you strictly follow the temperature measurement rules and observe the problems described on your basal temperature chart for at least 2 consecutive cycles, consult your doctor for additional examinations. Beware of making a diagnosis by a gynecologist only on the basis of graphs. What you need to pay attention to:

anovulatory graphics
regular cycle delays during pregnancy not occurring
late ovulation and not getting pregnant for several cycles
controversial graphics with poorly defined ovulation
high temperature graphics throughout the cycle
low temperature graphics throughout the cycle
graphics with a short (less than 10 days) second phase
graphics with a high temperature in the second phase of the cycle for more than 18 days, without the onset of menstruation and a negative pregnancy test
unexplained bleeding or strong discharge in the middle of the cycle
profuse menstruation lasting more than 5 days
graphics with temperature differences in the first and second phase of less than 0.4 degrees
cycles shorter than 21 days or longer than 35 days
schedules with clearly expressed ovulation, regular sexual intercourse during ovulation and not occurring pregnancy for several cycles

Signs of probable infertility according to the schedule of basal temperature:

The average value of the second phase of the cycle (after the temperature rises) exceeds the average value of the first phase by less than 0.4 ° C.
In the second phase of the cycle, there is a fall in temperature (the temperature drops below 37 ° C).
Temperature rise in the middle of the cycle lasts more than 3 - 4 days.
The second phase is short (less than 8 days).

Determination of pregnancy by basal temperature

The method of determining pregnancy by basal temperature works under the condition that ovulation is present in the cycle, since for some health problems the basal temperature can be increased for an arbitrarily long time, and monthly periods may be absent. A prominent example of such a disorder is hyperprolactinemia, due to increased production of the hormone by the pituitary gland - prolactin. Prolactin is responsible for maintaining pregnancy and lactation and is normally elevated only during pregnancy and lactation (see. Examples of graphs for normal and various disorders).

Fluctuations in the basal temperature during different phases of the menstrual cycle are due to different levels of hormones responsible for phase 1 and 2.

During menstruation, the basal temperature is always elevated (about 37.0 and higher). In the first phase of the cycle (follicular) before ovulation, the basal temperature is low, up to 37.0 degrees.

Before ovulation, the basal temperature decreases, and immediately after ovulation it increases by 0.4–0.5 degrees and remains elevated until the next menstruation.

In women with different lengths of the menstrual cycle, the duration of the follicular phase is different, and the length of the luteal (second) phase of the cycle is approximately the same and does not exceed 12-14 days. Thus, if the basal temperature after the jump (which indicates ovulation) remains elevated for more than 14 days, this clearly indicates the occurrence of pregnancy.

This method of determining pregnancy works if ovulation is present in the cycle, since for some health problems the basal temperature can be increased for an arbitrarily long time, and monthly periods may be absent. A prominent example of such a disorder is hyperprolactinemia, due to increased production of the hormone by the pituitary gland - prolactin. Prolactin is responsible for maintaining pregnancy and lactation and is normally elevated only during pregnancy and lactation.

If a woman is pregnant, then menstruation will not come and the temperature during the entire pregnancy will remain high. The decrease in basal temperature during pregnancy may indicate a shortage of hormones that preserve the pregnancy and the threat of its termination.

With the onset of pregnancy, in most cases, on the 7th - 10th day after ovulation, implantation occurs - the insertion of a fertilized egg into the endometrium (inner lining of the uterus). In rare cases, there is early (up to 7 days) or late (after 10 days) implantation. Unfortunately, it is impossible to reliably determine the presence of implantation or its absence either on the basis of a schedule or using an ultrasound at a gynecologist's appointment. However, there are several signs that may indicate implantation. All these signs can be detected on day 7-10 after ovulation:

It is possible that small secretions appear on these days, which pass within 1-2 days. This may be the so-called implant bleeding. At the time of the introduction of the egg into the inner lining of the uterus, the endometrium is damaged, which leads to insignificant secretions. But if you have regular discharge in the middle of the cycle, and pregnancy does not occur, then you should contact the gynecology center.

A sharp decrease in temperature to the level of the midline for one day in the second phase, the so-called implant retraction. This is one of the signs most often observed in graphs with confirmed pregnancy. This recession can occur for two reasons. First, the production of the hormone progesterone, which is responsible for raising the temperature, begins to decline from the middle of the second phase, when pregnancy begins, its production resumes again, which leads to temperature fluctuations. Secondly, during pregnancy, the hormone estrogen is released, which in turn lowers the temperature. The combination of these two hormonal changes leads to the appearance of implantation depression on the graph.

Your graph has become three-phase, which means that you see a rise in temperature on the graph, similar to ovulation, during the second phase of the cycle. Such an increase is again due to the increased production of the hormone progesterone after implantation.

For example, the graph - implantation retraction on the 21st day of the cycle and the presence of the third phase, starting from the 26th day of the cycle.

Such early signs of pregnancy, such as nausea, chest tension, frequent urination, intestinal upset, or just a feeling of pregnancy, also do not provide an accurate answer. You may not be pregnant if you have all of these signs or are pregnant without a single symptom.

When you use the basal temperature method to protect from unwanted pregnancy, you need to consider that not only the days of ovulation on the basal temperature schedule can be dangerous. Поэтому в период с начала менструации и до вечера 3-го дня после подъема базальной температуры, который происходит после овуляции, лучше использовать дополнительные меры для предотвращения нежелательной беременности.

Our constant reader, Natalya Gorshkova, has compiled a form for you to quickly fill in and automatically build a basal temperature chart, which can be printed and shown to a doctor. You can download it from the link: the form of the schedule.

Discussion of graphs is conducted on the forum

Attention! Making any diagnoses only on the basis of basal temperature graphs is impossible. Diagnoses are made on the basis of additional examinations conducted by a gynecologist.

What is marked rectal temperature before menstruation

Rules for measuring basal temperature (BT):

  • measure it in the rectum,
  • use one device, preferably a mercury thermometer (you must knock it down the night before, and then put it on a bedside table or other place so that you can reach the mono with your hand and not get out of bed),
  • rest before the measurement - at least three hours before the measurement you need to sleep,
  • don't get up, have sex,
  • ensure the normal functioning of the intestines.

It is necessary to measure BT daily, and to build a curve not less than 3 months. In principle, you can begin to build a schedule on any day of the cycle. Even the days of menstruation should not be missed, and if the need arises to take pills or excessive physical exertion or other factors that may affect the indicators are expected, they should be noted in the schedule.

BT schedule - This is the curve that is obtained by connecting all the points, the readings of the measured temperature. On the X-axis, the day of the cycle is marked, according to the OS — degrees, and the difference should be made small, since the temperature will fluctuate between 36-37.5 degrees. Normally, the rectal temperature chart has the following regularities:

  • in the first two weeks, the figures fall, normally 36.2-36.6 degrees,
  • 24-48 hours before ovulation, the temperature rises,
  • BT drops sharply by 0.3-0.6 degrees,
  • temperature increase as soon as ovulation occurred to 37 degrees and even higher
  • decrease in indicators on the eve of menses up to 36.6 degrees.

In the luteal phase of the cycle, relatively high values ​​are observed (at the level of 37-37.5 degrees), if conception occurs, the temperature stays that way all the pregnancy.

Ovulation rates:

  • a day or two before there is a sharp rise in temperature up to 37.5 degrees,
  • ovulation - rectal temperature drops to 36.7-36, 8 degrees, after which it must rise again if a sufficient amount of progesterone is produced in the body.

If the rise on the graph is smooth, not sharpThis may indicate an inferiority of the egg or an insufficient level of the peak of LH.

Sharp rise, and then the fall (two peaks), indicates the death of the egg.

No lift temperature generally indicates the absence of ovulation, which may be due to temporarily affecting factors on the body, and with serious hormonal disorders, hereditary diseases.

BT valueswith delayed menstruation depends largely on the cause of the failure, perhaps:

  • high (more than 37 degrees) - indicates pregnancy, an inflammatory process in the pelvic area, non-compliance with the measurement rules, with repeated ovulation (double, which happens rarely),
  • low (less than 37) - there is no ovulation, or there is a failure of the second phase of the cycle.

Permanent low or high on the chart and at the same time the observance of all rises / falls can be an individual feature of the female body.

If high rates remain in the second phase, this directly indicates an inflammatory process in the area of ​​the appendages, if pregnancy is excluded.

The graph is normal

The graph of BT is a curve that is obtained by connecting all the points, the readings of the measured temperature. On the X-axis, the day of the cycle is marked, according to the OS — degrees, and the difference should be made small, since the temperature will fluctuate between 36-37.5 degrees. Normally, the rectal temperature chart has the following regularities:

  • In the first two weeks, rates fall. This is due to the action of estrogen, which slows down all metabolic processes in a woman's body. BT is fixed at the level of 36.2-36.6 degrees.
  • 24-48 hours before ovulation, the temperature rises. This is a kind of precursor to the release of the egg from the follicle.
  • BT drops sharply. This is due to the appearance of a peak in the release of luteinizing hormone. At the same time, the graph shows a “drop in” temperature by 0.3-0.6 degrees.
  • Temperature increase in the second phase. As soon as ovulation occurs, the corpus luteum begins to function, which progesterone secretes, the latter stimulates all metabolic processes and increases the level of metabolism. The rectal temperature at the same time rises to 37 degrees and even higher.
  • Decrease in performance on the eve of menstruation. If conception did not occur, the level of progesterone drops again and after that the temperature reading. Its values ​​are again at 36.6 degrees.

Ovulation rates

Ovulation is the release of an egg from the follicle. This happens due to a surge of luteinizing hormone (LH) in the pituitary gland. On the graph of BT this is reflected as follows:

  • a day or two before ovulation, there is a sharp rise in temperature up to 37.5 degrees,
  • ovulation - rectal temperature drops to 36.7-36, 8 degrees, after which it should rise again if a woman has enough progesterone in her body.

If the rise on the graph is smooth, rather than abrupt, this may indicate the inferiority of the egg or an insufficient level of the peak of the LH. A sharp rise, and then a fall (two peaks), indicates the death of the egg.

The lack of temperature rise generally indicates the absence of ovulation, which may be due to temporarily affecting factors on the body, and with serious hormonal disorders, hereditary diseases.

What is the temperature during the delay of menstruation

The values ​​of BT during menstruation delay largely depend on the cause of the failure. Perhaps the following:

  • high (more than 37 degrees) - indicates pregnancy, and can also be with the inflammatory process in the pelvic area, with non-compliance with the measurement rules, with repeated ovulation (double, which happens rarely),
  • low (less than 37) - indicates the absence of ovulation, or failure of the second phase of the cycle.

It should be borne in mind that the constant low or high rates on the chart and at the same time compliance with all rises / falls can be an individual feature of the female body. Therefore, only a specialist can interpret the final result.

Signs of inflammation

Schedule BT can reflect not only the reproductive potential of a woman, but also indicate the pathological processes in the body. Thus, high rates in the first phase are the norm, but if they also persist in the second, this directly indicates the inflammatory process in the area of ​​the appendages, of course, if pregnancy is excluded.

We recommend to read about when they come monthly during lactation. From the article you will learn about the discharge after childbirth, factors affecting the onset of menstruation during lactation.

And here more about the features of the menstrual cycle after vacuum aspiration.

Basal temperature is a simple and affordable method for determining women's health. It can easily be carried out at home and even independently interpret some results. However, only a specialist can finally and most accurately understand the pathology and pathology.

See in this video about the rules for measuring and evaluating the results of rectal temperature:

What should be the normal rectal temperature before menstruation

Before menstruation, the body of girls and women will undergo changes. In women, the mammary glands increase in size, the emotional background becomes unstable. Indicators of basal temperature vary.

Finding out what rectal temperature before menstruation is considered normal, you will simplify your life in such an important issue as pregnancy planning. With the help of rectal indicators you will be able to calculate the "golden" days for conceiving a baby.

You will also learn about the upcoming ailments, noticing significant deviations in the usual values ​​for you.

What hormones solve ...

How can body temperature tell the patient about the disease? Why is the usual measurement format less reliable than studying temperature in delicate places? These questions concern many modern girls.

The basal parameters of the patient depend on the hormones - estrogen and progesterone. These substances "work" on ovulation and conception. The female glands begin to actively produce progesterone when the egg moves into the abdominal cavity. In response to these processes, the basal temperature of the woman rises. If this does not happen, the doctor talks about possible hormonal abnormalities.

Learn basal indicators can be using rectal measurement. To this end, a thermometer is inserted into the rectum. Basal values ​​can also be measured by placing the device in the mouth or vagina. The latter option is not very convenient for a woman when her menstruation begins.

Therefore, gynecologists advise girls to measure rectal temperature. This way is informative. In addition, surveillance of well-being will not require financial costs or considerable physical effort from a girl.

All you need is a thermometer, a notebook and your own discipline.

Who needs the measurement of “delicate” values?

It will be useful for many girls and women to keep a “health diary”, in which there will be rectal indicators.

Recall who needs to carefully record the basal indicators:

  • Patients who are unsuccessfully trying to conceive a baby.
  • Girls suffering from hormonal diseases.
  • Ladies who do not want to get pregnant and want to calculate "calm" (in terms of hormonal activity) days.

What to do if during the measurement you noticed any deviations from the generally accepted indicators? Do not rush to invent a diagnosis of "infertility." Only an experienced doctor can judge your prospects for motherhood.

Simple rules

For Eve’s daughters, it’s natural to consider the situation when the basal temperature sharply “climbs up” shortly before the critical days. A couple of days before menstruation, it decreases.

To trace a clear pattern between temperature and “special” days, you should take measurements for at least three months. So you clarify the big picture.

If a woman misses at least one day, the probability of calculating the most successful conception period will decrease.

Let's name the conditions necessary for measurement of basal values:

      • The measurement of "sensitive" indicators should become an everyday ritual,
      • You need to rest longer than four hours,
      • Do the procedure in the morning as soon as you wake up,
      • Prepare the thermometer in the evening. Let it lie on the coffee table. The main thing is that you can easily take it,
      • Before checking the basal data it is not recommended to get up and move,
      • Measure at least five minutes
      • All information should be marked on the chart.

It does not matter which thermometer you decide to use - electronic or mercury. Both devices are highly accurate.

Do not rely on a good memory in such a delicate matter as the measurement of rectal temperature. All values ​​should be recorded in a notebook. Such a calendar you can show the gynecologist. Focusing on the values ​​of rectal parameters in certain intervals of the cycle, the doctor will understand how high the chances of a successful conception.

Ladies and girls for whom pregnancy is not a dream can also benefit by following basal rates. After learning which days of the cycle are the least successful for conception, you can plan intimate dates.

Recall how marked the degree scale. Typically, the scale is marked from the value of 35.7 C to the indicator of 37.2 C. Gynecologists advise patients to keep a schedule for three cycles. If at least one menstruation is missed - start over.

Events that will confuse you

In some cases, patients should not place high hopes on objective indicators of basal temperature. What rectal temperature before menstruation should be with you depends on the condition of the body.

We list the situations that distort the results of your "research" activities:

      1. Flu.
      2. Cold.
      3. Great physical exhaustion.
      4. Sleep lasting two to three hours.
      5. Jar of Hearts.
      6. Sexual contact that occurred shortly before the "event".
      7. Stormy party with strong drinks.
      8. Taking antibiotics.
      9. Climate change.

Food poisoning and trauma can also affect the overall picture of measurements.

What do you learn by following the basal indicators?

The duration of the menstrual cycle is twenty-eight days. You will certainly be interested in how the basal indicators change over the period. As long as you have these days, the temperature will be thirty-seven degrees. The day before the cessation of menstrual flow, the basal temperature decreases. As a rule, its value during this period is 36.4 C.

We know that the menstrual cycle consists of three phases. Follicular phase of the doctor called the time interval when the development of the dominant follicle.

The basal index during this period averages 36.5 C. When a lady's body enters the ovulatory phase, the temperature rises just above the “thirty-seven” mark.

Two to three days before the start of menstrual discharge, the temperature will drop again.

Careful measurement of indicators will help you learn more about your own health. You will understand how harmoniously your body enters into the ovulatory period.

How will a woman understand that “everything worked out”?

The human body is a complex and interesting “microcosm”. All processes in it are closely interrelated. Watching for changes in your own body is helpful and instructive.

Many ladies were able to learn about what happened conception before the delay of menstruation. Of course, it is not in the telepathic abilities of patients. Having traced that the rectal temperature for fourteen days is kept at “thirty-seven”, the woman can assume that conception has taken place.

An additional argument in favor of your special position will be the delay in menstruation. In order not to get lost in the conjectures of "it turned out or not," you can apply a pregnancy test.

Some reasons for alarm ...

Some patients notice that their temperature before ovulation is high. And before critical days, it decreases. Such a feature signals that the female sex glands produce too little estrogen. On the chances of the ladies to conceive to speak early.

The situation is not entirely prosperous when, after ovulation (before the “special” days), the basal temperature indicators are lower than those values ​​that were traced before ovulation. This nuance indicates a deficiency of progesterone. Probably, ailments and discomfort did not have time to disturb you. But without a competent hormonal correction to conceive a baby, you can not.

If during critical days the temperature of the mucous membranes did not become lower than 37.1 C, the doctor suspects that the ladies' body is exhausted by inflammatory processes.

Having learned what rectal temperature before menstruation differs from “canons”, the gynecologist will prescribe her hormone tests. Ultrasound examination of the reproductive organs may be necessary for some patients. Only after these events, the doctor will prescribe the necessary medicines. After therapy, you will again need to keep a diary of rectal temperature.

Temperature before menstruation

Measuring basal (rectal) body temperature indicators is a popular way to plan a pregnancy.

Tracing the schedule, you can not only calculate favorable days for conceiving a child, but also learn about the onset of menstruation or pregnancy.

Also, its certain dynamics may indicate possible inflammatory processes in the organs. All this can be traced due to the fact that the basal body temperature of a woman directly depends on the level of hormones.

To correctly create a schedule for measuring basal body temperature, you should follow these rules:

  • control measurement should occur daily, always at the same time,
  • measure indicators should be immediately awake,
  • sleep should be more than 3 hours,
  • it is necessary to measure indicators no later than 8 am
  • medical thermometer must be prepared in advance, leaving it somewhere near the bed,
  • better to use the same thermometer
  • Before measuring the temperature, one should not get out of bed, sit down, exercise any physical activity,
  • temperature should be measured for at least 5 minutes in a fixed position,
  • the data obtained are marked on the graph,
  • the schedule is maintained for three or four cycles.

Such a schedule helps women to better navigate the processes occurring inside her body. It is worth remembering that due to some factors, the schedule risks being inaccurate. Errors can make:

  • diseases,
  • physical fatigue,
  • nerve strain
  • drinking before the measurement,
  • sleep less than 6 hours
  • sexual intercourse shortly before the control measurement,
  • прием ряда медикаментов.

Все данные необходимо записывать, вести календарь. Градусная шкала, как правило, размечается от показателя 35,7 °С и до отметки 37,2 °С.

Динамика графика в норме

Статистика говорит, что менструальный цикл здоровой женщины в среднем составляет 28 дней. Indicators of basal temperature with the following:

  • 36.3 ° C - one day before the end of menstruation,
  • 36.6 - 36.9 ° C - during the follicular phase, until the middle of the cycle,
  • 37.0 - 37.4 ° C - in the period of ovulation,
  • 37.0 ° C - a few days before the onset of menstruation,
  • the difference between the follicular and ovulation periods is 0.5 ° C.

The reduced production of estrogen hormones at the beginning of the phase leads to an increase in basal body temperature. At this time, the necessary conditions for the maturation of the egg. The probability of becoming pregnant during this period is very low.

If the menstrual cycle has certain differences from the average indicators, the changes are reflected in the phase before the thermometer starts to increase, it is either lengthened or shortened. At the same time, the ovulation period will last about 2 weeks (with an accuracy of 2 days).

If the rectal temperature before menstruation is above 37 ° C, this may indicate pregnancy. This can be verified in the case when the mark remains above 37 for several days longer than the inherent phase of the body from the moment after ovulation to the onset of menstruation.

To do this, follow the dynamics of the graph is the second phase of the cycle.

Pregnancy may be indicated by the stability of the schedule, when the schedule for 18 days shows high temperatures.

What should be the rectal temperature before menstruation, can be understood by following the schedule. A few days before they begin, its performance gradually decreases. Rectal temperature during menstruation (by the time they start) drops to 37 ° C.

Dynamics of graphics in diseases

Indicators of the measurement of basal temperature may indicate diseases in a woman's body. Among them:

  • inflammatory diseases in the uterus (endometritis) - during menstruation, the temperature remains at elevations above 37 ° C, but before the first day of its onset there is a slight decrease in performance,
  • hormonal insufficiency is evidenced by a slow (at least three days) increase in performance with a difference of less than 0.4 ° C. The second phase becomes shorter for a period of up to ten days. Menstruation comes before the expected period. The temperature rises for at least a week,
  • Possible pregnancy is characterized by a rectal temperature of at least 37 ° C for two weeks, without a decrease. Period of menstruation is late. If discharge starts at the same time, this may indicate a possible risk of miscarriage,
  • inflammation in the appendages is reflected on the graph as follows: in the follicular phase, the temperature rises several days to 37 ° C. It does not fall before menstruation, while it remains above the mark of 37 ° C.

If the dynamics of the chart indicates some possible problems with the health of the woman, it is necessary to consult a gynecologist for advice.

It is very difficult to diagnose the disease on your own, because in most cases it is necessary to conduct additional examinations: to pass smears, to make ultrasound, blood tests, etc.

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Basal temperature before menstruation: what should it be after ovulation and when should it decrease (graph)

Even in the last century, doctors found out: if you measure the temperature inside the female body day after day, you can learn a lot about how its reproductive organs function.

The basal temperature before menstruation and after menstruation allows you to track important changes in the female urogenital area. Using daily fixation of temperature, the most suitable or unlikely days for conception are calculated. The BT method helps to detect pregnancy even before the delay, that is, the end of the cycle, and also to identify deviations in the state of women's health.

How to measure it

Basal temperature - changes in temperature, recorded rectally, orally or vaginally in a woman immediately after a night's sleep.

Regardless of the method, for an accurate measurement result, some rules should be followed:

  • The selected measurement method should be applied only one. If in this cycle you started to measure BT in the anus, then continue until menstruation. And only in the next cycle can the method be changed,
  • Temperature indicators are recorded daily for at least 3-5 months in a special schedule.
  • Measurements are made early in the morning at a fixed time immediately after the woman wakes up.
  • During periods of measurement, deep sleep should be at least 3-5 hours. That is, if you got up to the toilet in the morning, 1-2 hours before getting up, the measurement result will be inaccurate,
  • The schedule should reflect not only the basal temperature figures, but also the factors affecting its changes: stress, sexual contact, alcohol or drug intake, change in study time. All this can suddenly increase BT. Therefore, make notes under the chart. For example: "5 ds - woke up 3 hours later."

But these are not all important nuances. Read a detailed article on how to make a basal temperature chart and how to interpret it.

Bt in different phases of the cycle

The female body is a complex mechanism that is controlled by numerous hormones. They influence the digital temperature changes in different cyclical phases: it decreases or rises. That is, the schedule clearly demonstrates two phases: before ovulation and after it.

The basal temperature in the second phase of the cycle is an important indicator of how the female organs function. But to measure it only at this time is not enough: you need to see the whole “picture” as a whole, that is, measurements of BT are important for a whole month, and preferably several.

Let us analyze what basal temperature should be on different cyclic phases in a non-pregnant young woman.

Luteal Phase (Second Phase)

The temperature after ovulation increases and reaches maximum figures (37-37.5 degrees). This happens because of the active production of the hormone progesterone.

At the final stage of the luteal phase, the indicators again begin to decline slightly. Basal temperature of 36.8-37 degrees is considered to be optimal before monthly periods (2-4 days).

Your rectal temperature before menstruation may not coincide with the reference. The difference of plus or minus 0.3 degrees is considered the norm, because each of us has its own characteristics. That is why it is extremely important to conduct research for several months in order to identify "their" indicators.

However, the main thing here is the general trend: the basal temperature in the second phase of the cycle rises by 0.4-1 degrees, and a few days before menstruation (for 2-3 days) decreases slightly (by 0.2-0.4 degrees).


Sometimes the results of basal temperature readings before menstruation may have indications that differ from the standard. The reason for these changes lies in the failure of hormones, which is due to two factors:

  • Deviations in the functioning of the reproductive system,
  • The onset of conception.

Let us analyze the features of deviations of rectal parameters, when the graph of BT indicates the presence of diseases of the female urogenital sphere.

Anovulatory cycle

Monophasic graph, when the measurements are fixed almost at the same level, indicates the absence of ovulation. In this case, the basal temperature is low in the second phase. This situation is caused more often by hormonal problems. Regardless of the reason, a woman cannot become pregnant.

Almost every woman 1-2 times a year can fix an anovulatory cycle. In this case, there is no reason to worry. However, if the schedule for a long time shows a monotonous direct, consultation of the gynecologist to identify and eliminate the causes is necessary.

Progesterone deficiency

Lack of hormone progesterone provokes a condition called progesterone deficiency. Because of the disease, temperature indicators rise very little and do not reach 37 degrees a week before menstruation.

A distinctive feature of the disease is the shortened second phase of the cycle, which causes the appearance of menstrual bleeding ahead of time.

Phase 2 Failure (Progesterone Deficiency)

Inflammatory diseases

Inflammation of the uterine lining causes endometritis, which can also be recognized by a curve in the graph.

A bright, characteristic feature of the disease - rectal indicators around 37 degrees on the first day of the cycle, and after a slight fall, they again rise. Such deviations from the norm require mandatory treatment to a specialist.

Signs of an inflammatory disease

With inflammation of the appendages (adnexitis), BT is consistently high throughout the cycle — 37 degrees or more.

When to see a doctor

In addition to important knowledge of what basal temperature should be before menstruation, a woman needs to fix the duration of each phase.

The length of the second (luteal) phase is normally 12-13 days. As for the indicators before the onset of ovulation, then the time frame is more free. However, in a healthy woman, such fluctuations should be negligible. Moreover, such "minor violations" should be noted only in the first phase.

We list the important signs, after identifying which a woman needs to undergo a complete gynecological examination:

  • After ovulation, the basal temperature rises, but quite a bit - by 0.3 degrees or even less
  • The numbers fixing the changes during the whole cyclic period have approximately the same indicators or the exceeded or reduced values,
  • In the middle of the cycle, there is a very slow rise in values,
  • The first phase lasts more than 18 days, and the second - less than 10.

Bt and pregnancy

However, indicators that differ from the norm can be evidence of a pleasant and often long-awaited event.

After all, many women are beginning to use this technique to calculate the best time for conception and quickly determine the onset of pregnancy by BT.

What should be the basal temperature after ovulation, if a woman conceived a child?

Sometimes about a week after ovulation, BT sharply or slightly decreases - by 0.2-0.5 degrees. This is the so-called implant recession - the moment when the egg is attached to the wall of the uterus.

It does not last long - on the chart the decline is usually only for one day. Then the indicators return to their previous elevated values.

Before menstruation, basal temperature stays at 37.1 and higher (and does not decrease, as usual).

During pregnancy, temperature data after the release of the egg for a long time retain high rates: from 37 to 37.5 degrees. If these factors are accompanied by a delay in menstruation, and a tightness or soreness is felt in the chest, then the pregnancy test may be positive.

However, if these signs are joined by discharge of blood from the vagina, you should definitely visit a doctor, as in this case there is a high risk of miscarriage.

In the event that pain and increased body temperature are added to the above symptoms, an urgent need to go to the hospital, as these signs may indicate ectopic pregnancy.

Is the method reliable?

Patients and gynecologists use the rectal temperature values ​​for a long time, despite the fact that new, modern diagnostic methods have already appeared.

Can this research method be considered reliable? Unfortunately not.

Even if you follow all the recommendations for measuring temperature, the indicators may be inaccurate, as many factors influence the temperature regime:

  • Physical exercise,
  • Stress states or psycho-emotional stress
  • Hormonal drugs
  • Infectious diseases,
  • ORVI,
  • Drinking alcohol
  • Sexual contact
  • Short or excessively long night's sleep,
  • Long journeys.

It is impossible to take into account all the factors influencing the change in temperature indicators, therefore it is impossible to consider the measurement of the basal temperature as 100% reliable.

It would be more appropriate to use this technique as an adjunct along with such diagnostic methods as folliculometry or hormone level tests.

Normal, overpriced and lowered BT before critical days: we understand the nuances

Measurement of basal temperature (BT) is considered to be one of many favorite methods of pregnancy planning. Building up such a schedule from day to day, a woman is able to calculate “those very” intervals of the cycle when ovulation occurs, to learn ahead of schedule about the pregnancy and the coming menstruation.

In addition, a certain pattern formed on the graph, is able to tell about the beginning of the inflammatory process in the reproductive organs. All these points can be tracked because rectal temperature is a direct indicator of hormone levels.

How to do it right? What should be the rectal temperature before menstruation, if the body is in order?