The emergency contraceptive pill contains a large amount of hormones, which can easily lead to menstrual disorders, early menstruation or delayed menstruation are normal phenomena, especially withdrawal bleeding after taking the pill. If you get your period after taking the emergency contraceptive pill for a week, this is normal hormonal withdrawal bleeding after taking the pill. If the amount of bleeding reaches the amount of menstruation, it is considered a menstrual period and the date of the next menstrual period should be calculated from this time. If the amount of bleeding does not reach the amount of menstruation, or is significantly less than the amount of menstruation, this bleeding cannot be counted as a menstruation, and the date of the next menstruation must be calculated according to the previous date.