Measurement of rectal temperature is used by gynecologists to assess a woman's reproductive health. More often it is called basal. Based on the data obtained, charts are built that help determine the time of ovulation, the presence of hormonal disorders and inflammatory processes in the reproductive tract, as well as the threat of termination of pregnancy.
On the first day of the cycle, the follicle begins to mature under the influence of estrogens synthesized in the ovaries. When this process is finished, it bursts and an egg leaves it. This ends the first phase of the cycle and begins the second.
Next is the formation of the corpus luteum. It synthesizes progesterone. This hormone prepares the endometrium. If pregnancy does not occur, then menstruation begins, this completes the second phase.
Estrogens help to reduce rectal temperature, and progesterone - to increase it. Thus, it is low in the first phase of the cycle and high in the second. Immediately before ovulation, a surge of estrogen is observed, which provides an even greater decrease in temperature. However, this phenomenon is not always possible to fix when measuring it.
Thus, ideally, the rectal temperature during ovulation should be the lowest on the graph. And after it should be a leap up. When plotting on the horizontal axis, the days of the cycle are postponed, and on the vertical axis, measurements.
Many women who build them are interested in what temperature during ovulation is the norm. It depends on individual characteristics. However, for most women in the first phase, the temperature is in the range 36.4-36.8, and in the second –37-37.2. Accordingly, at the time of ovulation, it should fall below 36.4.
However, if a woman does not detect this phenomenon in her charts, then you should not be upset. Most of those who build them are faced with exactly this. Most often, the temperature during ovulation lies within the first phase.
Most importantly, the area of low and high temperatures should be clearly visible on the graph. The presence of a jump indicates the ovulation that has occurred. Although this is not always the case. With luteinization of the follicle, progesterone is released, a rise in temperature occurs, but there is no ovulation, and, accordingly, pregnancy is impossible.
The fact is that the release of an egg from a mature follicle stimulates a sharp increase in LH. By the way, it is he who is fixed by ovulation tests.
However, in some women, a surge occurs earlier than necessary or does not occur at all. In this case, the follicle does not burst, ovulation does not occur, and it is luteinized, existing until the end of the cycle and secreting progesterone. Experts believe that a long rise in the temperature curve (more than 3 days) may indicate this on the chart.
The temperature during ovulation in the first and second phase may be different from the given norms. This may be an individual feature. The difference in average temperatures between the phases is very important. The value should exceed 0.4, otherwise this may indicate a lack of progesterone and / or estrogen.
The temperature during ovulation, in the first and second phase, which randomly changes throughout the cycle, may indicate the absence of a mature egg. Moreover, the graph resembles a fence; there is no area of high and low temperatures.
The duration of the second phase is important, which should be more than 10 days, and preferably 14. High temperature throughout the cycle indicates a large amount of prolactin.
Based on only the type of graphs, it is impossible to draw final conclusions. It is necessary to undergo a hormonal examination, and only then treatment can be prescribed.
Thus, the temperature during ovulation should be the lowest per cycle. However, this is not the case with everyone. The most accurate method for determining the time of ovulation is folliculogenesis in combination with the delivery of hormones.