Menstrual cycle calculator

Accurately calculating one's menstrual cycle is very important for women. Many female friends may have seen some simple menstrual cycle calculation methods on medical websites, but they are very concerned about the accuracy of these calculation methods. After all, many patients do not understand how to calculate their menstrual cycle and have more or less doubts about it.

1. Calculation method of menstrual cycle

1. The normal menstrual cycle is 28 to 35 days. The length of the menstrual cycle varies from person to person. 7 to 10 days early or late can be considered as a normal range. As long as a certain periodicity can be maintained, it cannot be considered as irregular menstruation.

2. A complete menstrual cycle starts from the first day of the menstrual period to the first day of the next menarche. Under normal circumstances, this cycle time is measured in one month, but in fact it varies from person to person. The first day of bleeding is the beginning of the menstrual cycle, and the time interval between the first days of two menstruations is called the menstrual cycle. Therefore, the calculation of the menstrual cycle should include the time of menarche. Some women only calculate the time when their menstrual period ends, so they may feel that their menstrual cycle is shortened. In clinical medicine, some women often report irregular menstruation, with two menarches in a month. In fact, if you calculate carefully, it is normal to have menstruation once at the beginning and end of each month.

2. How to calculate the menstrual cycle more accurately

1. Menstrual period:

It lasts for about 5 days. During this time, the uterine wall, except for the base material, bleeds, collapses and falls off. The basic principle is not very clear, but it may be related to the sudden decrease in estrogen and corpus luteum copper metabolism. Each menstrual volume is about 50-200ml, of which about 35ml is blood.

2. Proliferative stage:

It lasts about 7-10 days. During this time, under the action of estrogen, the uterine wall becomes thicker and the glandular duct proliferates, but there is no metabolism. This period is equivalent to the whole process of the new egg in the uterus and ovaries being perfected. At the end of this period, the uterus and ovaries are completely divided and the egg is released.

3. Metabolic stage:

About 13-14 days. During this period, the uterine gland duct continues to expand under the action of the corpus luteum copper, becomes tortuous and begins to metabolize, the interstitial space becomes loose and swollen, which is suitable for the implantation of sperm and egg combination. If fertilization has not occurred, the corpus luteum begins to decline, the uterine wall collapses and falls off, and the cycle returns to the first stage.