After taking the emergency contraceptive pill, most people may have vaginal bleeding for about 1 week. This is due to the fact that the hormone level in women’s body will rise briefly after taking the emergency contraceptive pill, and then the hormone will fall, presenting a phenomenon of withdrawal bleeding for about 1 week, and this bleeding usually does not last long in about 3-5 days. Of course, if there is no vaginal bleeding after 1 week, it does not mean that the contraceptive has failed, but the specific situation should be judged according to whether the menstruation is delayed or not. If the period is normal, the contraceptive is successful. If the period is delayed, it is recommended to go to the hospital or buy a test strip to test for pregnancy to determine if the contraceptive is successful.