It is best to wait for the next menstrual period before having sex, because although the vaginal bleeding is clean, the endometrium has not been completely repaired at this time. The time to repair the lining of the uterus is about 1 month, premature sexual intercourse can easily lead to the inflammation of the lining of the uterus, causing endometritis, serious patients will also lead to the occurrence of pelvic inflammatory disease, so it is best to wait for a period of time after a medication, to be clean after the period of time can be coitus, at this time it is more secure. In addition, again have sex must do a good job of contraception, to prevent the occurrence of unwanted pregnancy, if the pregnancy occurs again, the female uterus and the body are more harmful.