Pregnancy after taking emergency contraceptive pills generally does not affect the fetus, you can consider close observation of the condition, continue the pregnancy; however, if you find that there are abnormalities in pregnancy or fetal abnormalities, terminate the pregnancy in a timely manner. The reason is that emergency contraceptive pills are designed to prevent the passage of sperm by inhibiting the discharge of eggs and increasing the concentration of cervical mucus, thus achieving the purpose of contraception. Therefore, after the failure of taking emergency contraceptive pills, the sperm will meet with the egg to form a fertilized egg, and the drug does not have any effect on the fertilized egg, so it usually does not have an effect on the development of the fetus. However, it should be noted that, after taking emergency contraceptive pills to become pregnant, should pay attention to the early stages of pregnancy to observe whether there is a miscarriage, there are abnormalities should be promptly seek medical attention.