Whether taking the pill at the age of 16 will lead to infertility needs to be analyzed according to the type of contraceptive pill and whether it is used correctly. Contraceptive pills are mainly divided into short-acting contraceptive pills and emergency contraceptive pills. Correct and standardized use of contraceptive pills is usually harmless to the human body and will not lead to infertility; if emergency contraceptive pills are used frequently within a short period of time, there is a risk of infertility. 1. Short-acting contraceptive pills: consist of low doses of estrogen and progestin, the dose is relatively small and the safety is relatively high. Some patients with polycystic ovary syndrome and menstrual disorders can also regulate their hormone levels through short-acting oral contraceptives under the guidance of doctors, and normal ovulation can be restored after stopping the use of short-acting oral contraceptives, which will not lead to infertility. 2. Emergency contraceptives: the composition is a large dose of progestin, which interferes with the endocrine state of the body relatively obviously, and after taking them, nausea, vomiting, breast enlargement, breast tenderness, and infertility may occur. If you take the emergency contraceptive pill several times in a short period of time, it may lead to vaginal bleeding or reduced menstrual flow, which may lead to infertility in serious cases. 16 years old is relatively early to have sex, and if you take the emergency contraceptive pill orally, it may cause some damage to your body. Although it does not necessarily lead to infertility, it is not recommended to use this type of contraception and still carries some health risks. It can be done by wearing condoms and other methods of contraception for men under the premise of ensuring their own health and safety.