How many days is the normal menstrual period?

After women enter puberty, the endometrium will shed periodically under the influence of estrogen. This is the arrival of menstruation. Menstruation has a certain periodicity. A menstrual cycle that is too long or too short will have an impact on the body. A long menstrual period may cause chronic anemia, pelvic inflammatory disease and other diseases. A short menstrual period will cause blood stasis to remain in the body, causing inflammatory infection. How many days is a normal menstrual period?

A woman's menstrual cycle begins 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. The menstrual cycle is divided into the follicular phase before ovulation and the luteal phase after ovulation based on the day of ovulation. The length of the follicular phase is not fixed, but the luteal phase is fixed at about 14 days, plus or minus two days.

A menstrual cycle within this range is normal.

The characteristics of a normal menstrual cycle are as follows:

1. The first menstruation is called menarche. Most menarches occur 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, a rough estimate of the amount is often made by changing menstrual pads every day. 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.