The first prerequisite for pregnancy is the union of sperm and egg. After the union, a fertilized egg is formed and reaches the uterine cavity, where it will be deposited in order to gestate into an embryo, which later grows into a fetus. If contraception is used, especially condoms. When a condom breaks or is pierced, it is not a matter of how many holes are pierced in order to say that you are pregnant. As long as the condom is broken, it is possible for the sperm to pass through the broken condom and enter the uterine cavity, and then reach the fallopian tubes, where it can unite with the egg. If you don’t want to get pregnant, check the condom to see if it is broken. If you find that the condom is broken before you have sex, you should change the condom in time. If you find that the condom is broken after intercourse, you should take remedial measures in time if you don’t want to get pregnant. The most common remedy is to take the emergency contraceptive pill, which is more effective when taken within 72 hours of intercourse. However, this kind of contraceptive pill has side effects on women after taking it, which may lead to irregular menstruation. Therefore, emergency contraceptive pills are not recommended as a regular means of contraception.