If the condom falls off when you pull out after ejaculation, there is a possibility of pregnancy because the condom falling off may cause semen to flow into the vagina. If there is no requirement for childbirth, it is recommended to take good contraceptive measures. The simpler way is to take one short-acting pill orally every night for 21 days from now on, with the onset of menstruation again 3-5 days after stopping the pill. Condoms are a common, simple and practical form of contraception, but there are several considerations during the use of condoms. The first point is that condoms should not be put together with sharp things usually to prevent accidental injuries. The second point is that before wearing a condom, the gas in the front airbag should be discharged to prevent the rupture of the bubble due to pressure changes during sexual intercourse. The third point, it is recommended that the entire process of sexual intercourse are external condoms. The fourth point, when pulling out must pay attention to prevent dislodgement, prevent rupture.