The emergency contraceptive pill is only effective for intercourse within 72 hours before taking the pill. If you have intercourse on the second day after taking the emergency contraceptive pill, the pill will not be effective for this intercourse, so it is likely to lead to an unwanted pregnancy. Therefore, it is important to take good contraceptive measures and not to take the emergency contraceptive pill again in this case. If you take the emergency contraceptive pill repeatedly within a short period of time, it will cause irregular menstruation and will increase the probability of ectopic pregnancy. Contraceptive measures must be done well, whether it is irregular menstruation, ectopic pregnancy or unplanned pregnancy will have an impact on the woman’s body, emergency contraceptive pills should not be used more than 2 times in a year.