Generally 3-4 weeks after the abortion will have normal menstruation, if the patient after abortion more than 30 days has not yet menstruation, this time need to be vigilant about the possibility of intrauterine residual, need to further check the gynecological ultrasound, in order to understand the situation in the uterine cavity, if suggests that the intrauterine residual, need to carry out the purging operation treatment. If the patient has not yet had a menstrual period 1 month after the abortion, you also need to rule out the possibility of pregnancy. Under normal circumstances, 2-3 weeks after the abortion will have ovulation, if this period of time to take a chance on coitus, may cause another pregnancy.