How long is the normal interval between two menstrual periods?

As we all know, women have menstruation every month, which is obviously very common for women. If you are in good health, your menstruation will be very regular every month and the time difference will not be too long. However, there are also some special situations that cause great trouble to women. So, from a scientific point of view, what is the normal interval between two menstrual periods?

1. The first menstrual period is called menarche. Most menarche occurs between the ages of 13 and 15, but it may be as early as 11 to 12 years old or as late as 17 to 18 years old. The age of menarche in different regions of my country is not much different, but those who are weak or malnourished may have a later menarche, while those who are strong and well-nourished may have an earlier menarche.

2. The first day of bleeding is called the beginning of the menstrual cycle, and the interval between the first days of two menstrual periods is called a menstrual cycle, which is generally 28 to 30 days. About 7 days earlier or later is still within the normal range, and the length of the cycle varies from person to person.

3. Normal menstruation lasts for 2 to 7 days, with an average of about 5 days. The amount of menstrual flow is difficult to calculate. In clinical practice, the amount is roughly estimated by the number of times menstrual pads are changed daily. Some people have measured that the normal menstrual blood volume is about 10 to 58 ml, and some women's menstrual volume can exceed 100 ml. Some people believe that monthly blood loss of more than 80 ml is a pathological condition. Generally, the heaviest bleeding occurs on the 2nd to 3rd day of menstruation.

4. Menstrual blood is generally dark red. In addition to blood, it also contains endometrial fragments, cervical mucus and vaginal epithelial cells. The main characteristic of menstrual blood is that it does not coagulate, but under normal circumstances there are occasionally some small clots.

The above is the relevant content about how long the interval between two menstrual periods is normal. In short, a woman's menstrual cycle starts on the first day of menstruation and ends on the next menstruation. The length of the cycle varies from person to person, ranging from about 21-36 days, with an average of about 28 days. The duration of menstruation is generally 3-7 days, with an average of 5 days.