How long to have sex after giving birth is divided into normal delivery and cesarean section. After a normal delivery, you can usually have sex after 42 days. Cesarean section patients need about 2-3 months to have sex. 1. normal delivery: 42 days need to go to the hospital to do postpartum review, as long as the maternal body, uterus, incision and other aspects of the recovery of normal, you can gently and properly have sex, must take contraceptive measures to avoid unwanted pregnancy. 2. Cesarean section: after the cesarean section is also about 42 days to do postpartum review, as long as the body, incision, the uterus after the recovery of normal, more than 2 months can be gentle and appropriate to have sex. Contraceptive measures must be taken to avoid unwanted pregnancy. Specific sexual life time, must be in the doctor after the postpartum examination, under the guidance of the doctor to determine the time can be coitus, need to take contraceptive measures.