If your period is normally normal, it is advisable to consider a medical abortion after 40 days of menopause. Before having a medical abortion, it is necessary to pass an ultrasound examination to confirm that the pregnancy is in the uterus before having a medical abortion. And after the ultrasound diagnosis is between 5-7 weeks of pregnancy can do abortion, more than 7 weeks can not do abortion. At this time, because the embryo is too big, the drug may not be able to kill the embryo, which may lead to failure of medical abortion. Therefore, before having a medical abortion, the number of days of pregnancy must be determined according to ultrasound diagnosis before giving a medical abortion, and it is recommended to go to the hospital for observation on the third day of taking the medication, and the embryo will be expelled from the body only after 2-6 hours. If the amount of vaginal blood increases significantly during the course of the medication, which is greater than the menstrual volume or about 150mL, an emergency operation to remove the embryo is required.