Taking emergency contraceptive pills can advance your period because taking emergency contraceptive pills tends to cause a temporary increase in the level of hormones in the blood, and withdrawal bleeding occurs after the hormones drop, which is manifested as early menstruation. It is better not to take contraceptive pills indiscriminately, the side effects are great and it is easy to cause endocrine disorders and lead to menstrual disorders. If you do not intend to get pregnant, usually do a good job of contraception, for example, you can have intercourse during the safe period, you can also use the contraceptive ring, condoms, etc. Do not take emergency contraceptives more than three times a year, if you take too many times, it is easy to cause endocrine disruption, which will seriously affect future fertility. If your period is early, it is best to observe the amount of bleeding, too much bleeding is recommended to take reasonable drugs to stop bleeding.