Aunt stands in for menstruation. Taking birth control pills may cause menstruation to come earlier, which is normal; if it causes irregular vaginal bleeding, it is abnormal.
For patients taking short-acting birth control pills, withdrawal bleeding usually occurs within 1 week of stopping the pill, at which time it is normal for menstruation to occur, usually not earlier.
For patients taking emergency contraceptive pills, due to the large amount of progesterone contained in them, it may also cause patients to experience symptoms such as early menstruation and irregular vaginal bleeding. If it is clear that it is menstruation, as long as the amount of menstruation is normal there is usually no need for special treatment. However, if the vaginal bleeding is much different from the usual menstruation, it is necessary to be alert to whether the contraception has failed, and to rule out the possibility of ectopic pregnancy and other causes of bleeding.
It is also important to note that emergency contraceptive pills can cause menstrual disorders and other side effects. If irregular vaginal bleeding occurs, you should consult a doctor in time to regulate menstruation under the guidance of the doctor. It is not recommended that women take emergency contraceptive pills on a regular basis, and it is best to use condoms and other measures to prevent pregnancy.