Taking the emergency contraceptive pill orally for two months in a row will first cause changes in endocrine hormones. Because the emergency contraceptive pill can disrupt the endocrine hormones in the body, there may be abnormal menstrual cycles, which may even be disrupted for 3-4 months. Also, there may be abnormal bleeding, also known as withdrawal bleeding, which is recommended to be observed. The emergency contraceptive pill may cause disruption of the menstrual cycle and may also cause ovulation abnormalities, which will slowly return to normal in about 3 months. Emergency contraceptive pills are not 100% contraceptive and there is a certain chance of contraceptive failure. If there is a chance of contraceptive failure, the chance of ectopic pregnancy will be greatly increased.