Oral contraceptive pills are a highly effective, safe and simple method of contraception, but sometimes pregnancy occurs after taking the pills. Therefore, many people will worry about the adverse effects of the pill on the fetus. Here, the main consideration is the time between stopping the pill and the time interval of pregnancy. 1. It is safer for those who become pregnant 6 months after stopping the pill. Large doses of contraceptives have a certain damage to the DNA of human cells, and this damage can be completely repaired after stopping the pill for six months. 2, stop the drug within six months of pregnancy, fetal safety is uncertain. If there is no other reason for vaginal bleeding in early pregnancy, it may be related to chromosomal abnormality, so it is not necessary to keep the fetus. If the course of pregnancy is normal, should also be closely monitored, improve all kinds of prenatal examination, if abnormal, can consider termination of pregnancy. 3, do not know the pregnancy and continue to take contraceptives, to abortion is appropriate. Current research has reported that the incidence of congenital malformations is higher than normal in babies born from taking contraceptives during pregnancy. Therefore, oral contraceptives should be discontinued for six months before pregnancy.