The first 72-hour pill to menstruation has been bleeding for more than ten days may be caused by the adverse reaction to the drug, but also may be the failure of contraception after the aura of miscarriage. The 72-hour pill is an emergency contraceptive, and some people who take the emergency contraceptive pill may experience menstrual irregularities such as early menstrual cycles, prolonged menstrual cycles, prolonged menstrual periods, and heavy menstrual periods, and some women may also experience dizziness, headaches, vomiting, and other adverse reactions. So the front took 72 hours of contraceptive pills to menstruation has been bleeding for ten days, it may be emergency contraceptive pills adverse reactions caused by. 72-hour contraceptive pill there is a contraceptive failure may, if pregnant, aura miscarriage, there may be vaginal bleeding mistaken for menstruation, and aura bleeding time is longer may. It is recommended that patients need to take the 72-hour contraceptive pill under the guidance of a licensed pharmacist or instruction manual. If the vaginal bleeding is prolonged after using the pill, you need to seek medical attention.