Most of the women who take emergency contraceptive pills experience bleeding. This is because emergency contraceptive pills contain a large amount of progestin, which can interfere strongly with the hypothalamic-pituitary-ovarian axis, causing disorders in the hormone levels of the organism and loss of support for the endometrium, and bleeding can occur. Sometimes the bleeding is more frequent and most of it stops on its own within a week. If the bleeding is prolonged after taking the emergency contraceptive pill, it is recommended to visit the hospital promptly to give symptomatic treatment. The emergency contraceptive pill is used to prevent pregnancy after unprotected sex, and should be taken within 72 hours. Emergency contraceptive pills should not be taken frequently by women, as they can cause endocrine disruption and menstrual disorders.