In general, women can have sex appropriately 2 months after a natural birth and 3 months after a normal cesarean delivery. If you have sex, you should take a completely reliable contraceptive measure. Some people think that the postpartum breastfeeding period is a “safe period”, so you can have sex without taking any contraceptive measures. This is not scientific. According to survey statistics, about 1/3 of lactating mothers will get pregnant before their periods resume. This means that breastfeeding is definitely not a “safe period” and using breastfeeding to prevent pregnancy is not reliable. Once pregnant, lactating mothers have to go for abortion, which is a thin, brittle and soft uterus, and can easily cause perforation of the uterus and hemorrhage during abortion, which is very unfavorable to the lactating mother’s health. If a woman who has had a cesarean section becomes pregnant, it will be even more difficult and harmful to her body to have another abortion, not to mention that it will seriously affect or even interrupt breastfeeding. Exclusive breastfeeding mothers, if day and night to feed the baby and amenorrhea, then within 6 months the contraceptive effect can be more than 95%, but must insist on breastfeeding, and must be amenorrhea state, if only a few times breastfeeding, or menstruation has returned, then the effect is not reliable. Currently, the more appropriate method of contraception during breastfeeding is instrumental contraception. Because the commonly used contraceptive pill is a hormone, such as oral contraceptive pill No. 1 and No. 2, after taking it, not only can make breast milk secretion decrease, but also will enter the baby through breastfeeding, which will have adverse effects on the baby. Commonly used contraceptives are penis condom, vaginal diaphragm, intrauterine device, etc. The penis condom is simple to use, very easy to master, and reliable, and has a higher success rate than the IUD as long as it is used correctly. The vaginal diaphragm is effective, with a contraceptive rate of 98% and no foreign body sensation or sensual barriers, but it requires a high level of technical skill to use and is troublesome to maintain after use. To use this method, it is necessary to have a gynecological examination by a gynecologist, to choose the right type according to the size of the vagina, and to learn the methods of insertion and removal under the guidance of the doctor. For those who have a prolapsed uterus or loose vaginal walls, the position of the uterine cap is not easy to fix, so the effect will be poor, so this method should not be used. If you have had your period for 3 months after delivery, the woman may choose to have an IUD placed. You should not take birth control pills during the breastfeeding period, because the maternal body is in a state of adjustment after childbirth, endocrine changes in particular. Taking the pill at this time will affect the quality of breast milk and is not good for the health of the newborn. In addition, oral contraceptives can also inhibit milk secretion, which will affect the smooth implementation of breastfeeding. So during this special period, both long-acting and short-acting contraceptives should be banned for mothers. Of course, women who are not breastfeeding can choose to use it if their endocrine secretion has basically returned to normal after the month.