How long is the safe period before and after menstruation?

Many women know that having sex during the safe period will greatly reduce the possibility of pregnancy. However, because some women are not very accurate in calculating the safe period, some pregnancies may occur. Of course, the safe period does not necessarily mean that it is safe. If you want to prevent pregnancy, the safe period is not absolute. So, do you know how long the safe period is before and after menstruation?

The safe period is related to each person's longest cycle, shortest cycle, and the start time of menstruation. The safe period is not absolutely safe. Sometimes women ovulate earlier or later, and the judgment of the safe period becomes invalid at this time. Determining the safe period can only reduce the chance of pregnancy and cannot be used as a contraceptive method.

Normal women of childbearing age have menstruation once every 28 days or so. The period from the beginning of one menstruation to the first day of the next menstruation is called a menstrual cycle. For example, from the perspective of contraception, each menstrual cycle of a woman can be divided into the menstrual period, ovulation period and safe period. Ovulatory contraception is a method of contraception that stops sexual intercourse during the ovulation period. This is a traditional contraceptive method and was one of the commonly used contraceptive methods at home and abroad before the advent of birth control pills and intrauterine devices.

A woman's ovulation date is generally about 14 days before the next menstrual period. After the egg is released from the ovary, it can survive in the fallopian tube for 1 to 2 days, waiting for fertilization; the male's sperm can maintain vitality in the female's reproductive tract for 2 to 3 days, which is the dangerous period.

The safe period is divided into the safe period before ovulation and the safe period after ovulation. The period from the end of menstruation to three days before ovulation is the safe period before ovulation. From the first day after the end of ovulation to the day before the next menstrual cramps is the safe period after ovulation. Generally speaking, the safe period after ovulation is safer than the safe period before ovulation. This is because some women sometimes affected by environmental changes and mood swings affect the advance of the ovulation, so before the safe period ovulation will be shortened, but did not know their own, so before the safety period ovulation is not safe. The opportunity that the ovary has row two eggs in a menstrual cycle is very rare, that is, after ovulation to the next menstrual cramps before this period of time usually won't happen again the second time of ovulation, so the safety period after ovulation is relatively safe.

The key to using safe period contraception is to determine the female ovulation date. When the ovaries ovulate, there is generally no special feeling. Even though some women may have symptoms such as lower abdominal pain, back pain, breast swelling and mood changes, these phenomena are not specific symptoms of ovulation and therefore cannot be used as a basis for ovulation. Menstruation and ovulation change cyclically, and there is a close relationship between the two. If you understand the changing patterns of the two, you can determine the ovulation date through indirect methods. There are many ways to determine the ovulation date, and the methods that women can master themselves include: calculating based on the menstrual cycle, measuring basal body temperature, and observing cervical mucus secretion.