Emergency contraceptive pills, which are only used as emergency contraception after unprotected sex, have a contraceptive effect but should not be taken more than once. Emergency contraceptive pills may affect pregnancy if taken too much. Because emergency contraceptive pills can interfere with the hormone levels in the body, it can easily lead to irregular menstruation, increased menstrual flow, changes in menstrual cycles, prolonged cycles, and also affect the ovarian ovulation function. In addition, emergency contraceptive pills, if you take too much, will also increase the risk of ectopic pregnancy, so emergency contraceptive pills should never be used as a regular form of contraception, and usually take effective and safe contraceptive measures, the best use of condoms is better.