The main reason for vaginal bleeding after taking the emergency contraceptive pill is that the pill is a highly effective progestin, which prevents ovulation after oral intake, breaking the natural ovulation pattern of the ovaries and may lead to endocrine disorders, so vaginal bleeding may occur all the time. In addition, after taking emergency contraceptive pills, the endometrium will be abnormally thickened, and when the pills are stopped, there will be withdrawal bleeding, and the bleeding will be clean in about 3-5 days, and the amount of bleeding is not much. If the bleeding is constant, it is directly related to the endocrine disorder, so do not use emergency contraceptive pills as a regular contraceptive method because the side effects are very strong. If you keep bleeding, you can give symptomatic treatment, for example, you can take oral Anluo blood to stop the bleeding, and the bleeding will basically stop after 2-3 days of oral treatment.