Taking the emergency contraceptive pill twice a month can have effects, first of all, it can cause menstrual irregularities, abnormal bleeding and endocrine hormone disruption. When these effects are present, they may last for three months or even six months, and may have certain effects on the body. If you take emergency contraceptive pills twice a month, if you have finished taking them orally, you should first observe the adverse effects of the medication. However, if you have irregular menstruation, you should check your endocrine hormones on an empty stomach on the 2nd-5th day of your period if possible. Or ultrasound should be done to determine if there are any abnormalities in the endometrium of the uterus. According to the situation, take oral anti-inflammatory and hemostatic drugs to stop the abnormal bleeding first, so as to avoid prolonged bleeding, which will affect the normal quality of life.