What is the use of the periodic table?

Many people don’t know what the menstrual cycle is. Normal female menstruation can be calculated. Menstruation is what women call ovulation period. Therefore, the menstrual period table can calculate the ovulation period and menstrual period of women. Therefore, the menstrual period table is very important. So what is the use of the menstrual period table? Then let the experts introduce this issue to us.

Normal women of childbearing age have menstruation once a month. The period from the beginning of this menstruation to the first day of the next menstruation is called a menstrual cycle. From the perspective of contraception, each menstrual cycle of a woman can be divided into the menstrual period, ovulation period and safe period. Generally speaking, the ovaries of women of normal childbearing age release only one egg per month. The egg can survive for 1 to 2 days after being released, and the sperm can survive in the female reproductive tract for 2 to 3 days. The fertilization ability is mostly within 24 hours after ovulation. After 2 to 3 days, the sperm loses the ability to combine with the egg. Therefore, if you have sexual intercourse 2 to 3 days before ovulation and 1 to 2 days after ovulation, you may get pregnant. This period is called the fertile period or the dangerous period.

A woman's ovulation date is generally about 14 days before the next menstrual period. To be on the safe side, we call the 5 days before and 4 days after ovulation, together with the ovulation day, a total of 10 days, the ovulation period. The rest of the time except the menstrual period is called the safe 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 the day 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. 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 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 a second time of ovulation, so the safety period after ovulation is relatively safe. The key to using safe period contraception is to determine the woman's 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.

The above is the role of the menstrual period table introduced to us by experts. Many people want to have children, so they can choose to have sex when ovulating, which can increase the pregnancy rate and also serve as a contraceptive. Therefore, the menstrual period table is very important. Women who don’t understand it can consult experts to learn more.