The emergency contraceptive pill is taken orally within seventy-two hours after intercourse, then twelve hours after taking another pill will improve the effect of contraception, oral contraceptive pills only play a contraceptive effect on the previous intercourse, the next in the intercourse does not necessarily play a contraceptive effect. If you do not take contraceptive measures, you can only take emergency contraceptive pills again to give contraception, in a short period of time, frequent emergency contraceptive pills, may cause the following consequences. First, it leads to endocrine disorder and menstrual disorder; second, irregular vaginal bleeding; third, it can cause damage to liver and kidney function. Therefore, it is recommended that if you do not plan to get pregnant, you must take good contraceptive measures. It is not recommended to use the emergency contraceptive pill as a regular contraceptive method, and you can use condoms to give contraception.