The pill is used within 72 hours after sex, and the earlier it is used, the better the effect will be. The emergency contraceptive pill is a remedy after sexual intercourse and is definitely not a regular contraceptive method. The emergency contraceptive pill, if used frequently and repeatedly, can affect women’s hormone levels and endocrine secretion, which can easily lead to menstrual disorders. It should only be used occasionally, not more than twice a year, and not frequently within a month. It is important to take good contraceptive measures and not to rely on the emergency contraceptive pill, which can affect menstruation and increase the probability of ectopic pregnancy.