How is a woman's menstrual cycle calculated?

Usually we always have a bunch of mobile phone software that can help us calculate various data such as menstrual cycle. But if we don’t have these software, how can we calculate the menstrual cycle ourselves?

How to calculate the menstrual cycle

The menstrual cycle begins on the first day of bleeding, and the interval between the first days of two menstrual periods is the menstrual cycle. Therefore, the calculation of the menstrual cycle should include the time of menstruation. Some women only calculate the time when menstruation ends. This method will shorten the menstrual cycle and mistakenly believe that the cycle is shorter. It is normal to have menstruation twice a month, once at the beginning and end of the month.

The normal menstrual cycle is 28-35 days. The specific length may vary depending on individual physical fitness. Generally speaking, an early or delayed menstruation of 7-10 days can be considered within the normal range. As long as a certain regularity can be maintained, it is not irregular menstruation and there is no need to worry too much.

The duration of menstruation is generally 3-7 days, and the amount of menstrual bleeding is within 20-60 ml. The amount of bleeding is mostly on the 2nd to 3rd day of menstruation. The color of menstrual blood is generally dark red and does not coagulate. In addition to a small amount of blood, it also includes endometrial fragments, cervical mucus and vaginal epithelial cells.

Under normal circumstances, apart from bleeding, women will not have any obvious physical discomfort during menstruation. Some people may experience a feeling of heaviness in the lumbar region, breast tenderness, constipation or diarrhea, headache, bad mood, and other discomforts, but this discomfort will not affect their normal life. If it has affected their normal life, then they need to see a doctor.