Women can not have any sex within 1 month after delivery, because after abortion, the uterus is in an open state, the uterine lining is relatively thin, and the blood sinus is not completely closed, so premature coitus, vaginal bacteria are easy to enter the uterine cavity, and even retrograde infection to the pelvic cavity, resulting in endometritis or pelvic inflammatory disease, and even blockage of fallopian tubes affecting the future pregnancy. Therefore, it is recommended to have sex for the first time after a normal menstrual period, that is, more than 35 days after delivery. There should be 2 checkups, the first one is 15 days after delivery to see if there is any residual disease, and the second one is after the first normal menstrual period to see how the uterus recovers. If the uterus recovers normally, you can have normal sex, and you must take strict contraceptive measures to prevent unwanted pregnancy. It must take more than half a year before you can have a second pregnancy, otherwise it will easily lead to miscarriage.