Withdrawal bleeding is an adverse drug reaction that may occur when taking oral emergency contraceptives. Withdrawal bleeding is not a sign of successful contraception, it is just an adverse reaction to the medication that causes a small amount of bleeding due to the shedding of the endometrium. At the same time, the emergency contraceptive pill is not 100% contraceptive, there is a 20% chance of failure, so even with withdrawal bleeding, there is still a 20% chance of conception. From the point of view of eugenics, it is recommended to prohibit all oral medication in the month of pregnancy, and in the case of emergency contraceptives, it may have some effect on the fetus and termination of pregnancy is recommended. If you especially want to have a child and can take certain risks, you can continue the pregnancy, but you should undergo various tests during pregnancy, including NT, 4D ultrasound, Down’s syndrome screening, and screening for diabetes. If any abnormality is detected in the middle of the pregnancy, abortion needs to be induced at any time.