If a condom comes off after ejaculation, it is possible to get pregnant, but the chances of pregnancy are very low. Theoretically, as long as the sperm enters the vagina, there is a possibility of pregnancy, but it is only a matter of the chance of pregnancy. Theoretically, as long as the sperm enters the vagina, there is a possibility of pregnancy. If you don’t want to have children, it’s best to put in an IUD or tool to prevent pregnancy, and check if the condom is leaking or falling off after intercourse. You can also take short-acting contraceptive pills, such as Ursine and other drugs. All contraceptives are not always 100% guaranteed against pregnancy. Generally, if you have already had children, it is better to choose the IUD, which has the least side effects and is the easiest.