After taking the emergency contraceptive pill bleeding 2 days clean this month may also come to menstruation, there may be a delay in menstruation, if the patient delayed more than a week, go to the hospital in time to check to rule out pregnancy. Contraceptive pills mainly play a role in inhibiting the role of ovulation, the patient after taking emergency contraceptive pills bleeding 2 days after the clean, may be withdrawal bleeding, generally represents the patient’s contraceptive success, belong to the normal situation, usually will not affect the menstrual period. So after taking the emergency contraceptive pill bleeding 2 days clean this month may still come to menstruation. Because of the large amount of estrogen and progesterone contained in the contraceptive pill, it is possible that the menstrual cycle will be disrupted, appearing earlier or later. If the patient’s menstruation is delayed for about a week, it is a normal phenomenon. If the patient does not come for more than a week, it is recommended to go to the hospital for examination in time to rule out the situation of pregnancy. It is also recommended that patients should take other effective contraceptive measures when having sex to avoid frequent use of emergency contraceptive pills, menstrual disorders, which will cause harm to the body.