It is possible to get pregnant after taking the pill, probably because you were already pregnant before taking the pill, or because all contraceptive methods have the possibility of failure, or improper methods of administration, or differences in body type, etc. may lead to contraceptive failure. After pregnancy, pregnant women need to seek medical attention and perform various examinations during pregnancy, and the doctor will consider the medication and examination results to determine whether to continue the pregnancy. Common reasons 1, already conceived: before taking the pill has been pregnant, the pill can not play the effect of inhibiting ovulation; 2, improper taking method: oral short-acting contraceptive pill if omitted, less, taking irregular, or at the same time taking some other drugs, may cause contraceptive failure; emergency contraceptive pill should be taken within 72 hours after the end of intercourse, the earlier it is taken, the better the contraceptive effect, if taken later, will If you take it late, it will affect the efficacy of the pill and may lead to contraceptive failure; 3, physical differences: individual physical differences lead to poor absorption of the drug, or vomiting after taking the pill due to side effects, will also affect the efficacy of the pill and make contraceptive failure. After the failure of contraception, pregnant women need to go to the regular hospital for obstetrics and gynecology examination, such as ultrasound, sex hormone examination, etc., to understand the development of the baby, and then the doctor will assess whether to continue the pregnancy according to the situation of taking contraceptive pills. If the pregnancy continues, you can have regular obstetrical examinations during the pregnancy to closely observe the development of the fetus.