If you have sex right after your period, the probability of pregnancy is low. The menstrual cycle varies from woman to woman, from delayed to early menstruation, and in the case of early menstruation, ovulation may be pushed forward. Therefore, under normal circumstances, if a woman does not have the requirement to have children, it is recommended to take effective contraceptive measures every time you have sex to try to avoid unwanted pregnancy. There are many types of contraceptive measures, for women who have not had children, it is recommended to use condoms throughout the entire process, which is a good method of contraception and also reduces the probability of sexually transmitted diseases. Also, short-acting birth control pills are a good option and can be used depending on the situation. For women who have already had children, you can consider the birth control ring, which is also a better form of contraception.