Three methods for calculating the safe period of menstruation to calculate the accurate safe period

　　normal childbearing age female Menstruation occurs once every month. From the beginning of this menstrual period to the first day of the next menstrual period, it 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. But few people know this knowledge, so people often ask about menstruation safe period What are the methods of calculation? What should we pay attention to during the safe period of contraception? Next, I will introduce them one by one for your reference.

　　How to calculate the safe menstrual period

　　calendar method

　　If the menstrual cycle is always accurate, ovulation may occur on the 14th day after menstruation. After the egg cells are released, they can survive for about 2 to 5 days. sperm It can survive for 1 to 3 days after entering the female reproductive tract. Therefore, pregnancy can be avoided by not having sexual intercourse 3 to 4 days before ovulation and 5 to 7 days after ovulation.

　　A woman with a regular menstrual cycle has a basically stable ovulation time. Having sex during the safe period to achieve the purpose of contraception is called the safe period contraceptive method. This method is not suitable for young people because they cannot have sexual intercourse about a week apart. This method is suitable for middle-aged people.

　　basal body temperature method

　　Basal body temperature is healthy The body temperature of a person after waking up in the morning is generally the lowest body temperature of the day. In women of normal reproductive age, the body temperature rises immediately after ovulation and continues until the beginning of the next menstrual cycle. Use the changing pattern of a woman's basal body temperature to find her ovulation period, and refrain from sexual intercourse 3 to 4 days before and 5 to 7 days after it.

　　Observation method for changes in vaginal secretions

　　Women's vaginal secretions change regularly with different periods of the menstrual cycle. During ovulation, there is more and more mucus, there is a moist feeling in the vagina, the mucus becomes clear, and the mucus can be stringy, up to 10 cm long. The last day this mucus lasts is usually the period of ovulation. No sexual intercourse 3 to 4 days before and 5 to 7 days after.

　　Safe period sexual intercourse is suitable for people with normal menstrual cycles, couples who often live together, and who are proficient in and strictly abide by the safe period.； Couples who do not live together regularly, childbirth or miscarriage Postpartum Women who are pregnant, women whose mental mood, living environment and health conditions have changed, women who cannot grasp the safe period, newlyweds who are emotional and have strong sexual desire are not suitable for safe contraception for the time being.

　　Precautions for contraception during safe periods

　　Contraception during the safe period is not always effective. In addition to calculating the safe period for menstruation, there are some precautions that should be kept in mind. The following is a detailed introduction. Precautions for contraception during safe periods：

　　1. The safe period contraceptive method is only suitable for women with regular menstrual cycles.

　　2. Contraception by calculating the safe period is not applicable to women whose menstrual cycle is less than 21 days, more than 35 days, or women who are postpartum or breastfeeding.

　　3. Before using safe period contraception, it is recommended that you record your menstrual cycle in the second half of the year to understand the regularity of menstruation.

　　4. many disease It will change the ovulation time of women, such as endocrine diseases, kidney diseases, etc. If you use the "safety period" for contraception during this period, it can often lead to contraceptive failure.

　　5. Because women’s menstrual cycle will be affected by emotions and diseases, the failure rate of contraception based on calculation of the safe period alone is high. Therefore, it is recommended that it should be used in conjunction with other contraceptive methods.

　　6. In addition to calculating the safe period, the ovulation date should also be determined by measuring basal body temperature, observing changes in leucorrhea, etc., so as to better determine the safe period of contraception.

　　7. If you switch from oral contraceptives to safe period contraception, you may experience extra ovulation or irregular menstruation in the first few months after stopping taking the contraceptive pill, so you should try not to use it during these months. Safe period contraception , reduce the occurrence of disease.