The best time to have a medical abortion is within 49 days of menopause, and in terms of gestational weeks, around 5-6 weeks of pregnancy is best. Because the fetal sac is relatively small, it is more sensitive to the medication and the success rate is higher. The purpose of taking mifepristone is to necrotize the chorionic villi, and the purpose of taking misoprostol is to cause uterine contractions so that the fetal sac can be expelled. It is important to have an ultrasound to determine whether the pregnancy is intrauterine or extrauterine before having a medical abortion. If the pregnancy is intrauterine, the abortion should be performed; if it is ectopic, the treatment should be done according to the ectopic pregnancy. The criterion for determining intrauterine pregnancy is that the fetal sac is visible in the uterus, and the criterion for seeing the fetal sac is that the yolk sac is visible, and if the yolk sac is visible, the pregnancy is determined to be intrauterine. If you are sure that you do not want to have an abortion, you can choose to have a medical abortion or an abortion. The success rate of medical abortion is about 95%. During the process of medical abortion, there may be bleeding and stomach pain, if there is a lot of bleeding, you must seek help from the doctor in time. It is possible to expel the fetal sac after a medical abortion, but the uterine lining has not been completely expelled, so there is a continuous small amount of vaginal bleeding, if this happens, it is also recommended to go to the hospital for a checkup in time.