Experts explain how many days to delay menstruation is normal

　　A normal menstrual cycle is about 28 days, and ovulation occurs two weeks after the beginning of menstruation and two weeks before the next menstruation. Most women menstruate once every 28 to 30 days, but it is still normal if it is within 7 days early or delayed. The duration of menstruation is generally 3-7 days, and the amount of bleeding during one menstrual period is about 30-50 ml.

　　Emotions, environment, nutrition and other factors can cause early or delayed menstruation, which can also cause menstruation to change from "menstruation" to "seasonal menstruation" for even longer than half a year or even more than a year. It's normal if there are no lesions.

　　Ordinarily female Except for the ovulation period, the remaining days of the menstrual cycle are called safe periods. However, because ovulation is affected by many factors and may be advanced or delayed by a few days, the safety period is divided into absolute and relative. The absolute safety period refers to a day that is absolutely safe even if the ovulation date changes. Because the ovulation date generally does not change by more than 3 days, the week before and after menstruation (assuming it is 3 days) should be absolutely safe, and the closer the date is to menstruation, the safer it is.

　　Normal women of childbearing age have menstruation once a month. The period from the beginning of this menstrual period to the first day of the next menstrual period is called a menstrual cycle. For example, from the perspective of contraception, each menstrual cycle of a woman can be divided into menstrual period, ovulation period and safe period. Safe period contraception is a contraceptive method that stops sexual life during the ovulation period. This is a traditional contraceptive method. Before the advent of birth control pills and intrauterine devices, it was one of the commonly used contraceptive methods at home and abroad.

　　A woman's ovulation date is generally about 14 days before her next menstrual period. After the egg is released from the ovary, it can survive in the fallopian tube for 1-2 days, waiting for fertilization. man's sperm It can maintain fertilization ability in a woman's reproductive tract for 2-3 days, so it is easy to get pregnant during sexual intercourse in the few days before and after the egg is released. For the sake of safety, we call the 5 days before and 4 days after the ovulation day, including the ovulation day, a total of 10 days as the ovulation period. Because it is easy to get pregnant during sexual intercourse during the ovulation period, the ovulation period is also called the fertile period or the dangerous period.

　　What makes a woman's menstrual cycle normal? Many people believe that if it exceeds the normal cycle range, that is, 25-30 days, it is an abnormal physiological phenomenon. In fact, it is not the case. Whether menstruation is normal or not is not as simple as it seems on the surface. Some people have reached "seasonal menstruation", but it does not mean that they are not menstruating. healthy , in fact, this is closely related to the estrogen level and ovarian function in our body. The normal menstrual cycle is 25-30 days, and it is normal to be within one week early or late. However, some women's menstrual cycle may be delayed to two months or even longer, such as one quarter, which is the so-called "quarter menstruation" in medicine.