Bleeding one week after taking the emergency contraceptive pill is caused by the action of the drug and generally indicates successful contraception. The most commonly used contraceptives are the emergency contraceptive pill and the short-acting contraceptive pill. The emergency contraceptive pill is the first choice of many women for contraception after intercourse because it is easy to take and its effectiveness is more reliable. However, the emergency contraceptive pill is not a regular contraceptive method, but a temporary measure to avoid unwanted pregnancy. The dose of emergency contraceptive pills is quite high and can cause endocrine disruption and menstrual cycle disorders as a side effect. After taking the emergency contraceptive pill, there will be a withdrawal bleeding in about a week, which is caused by the action of the drug. Withdrawal bleeding generally indicates successful contraception, the bleeding time is not too long and the amount of bleeding is not too much, so just observe and do not deal with it.