There are cases of pregnancy after taking emergency contraceptive pills, the mechanism of emergency contraceptive pills is mainly to inhibit ovulation, inhibit the fertilized egg in the uterine cavity to bed, if it is taken after the female ovulation, its effect will be weakened. In addition, each woman’s absorption of the drug is not the same, the time to take the drug is not the same, if you can take the emergency contraceptive pill as soon as possible after intercourse, the effect will be better. Normally this medication is only used when a woman is in an emergency situation, mostly due to the discovery of condom breakage after using a condom. Emergency contraceptive pills should not be used as a regular method of contraception because they contain a lot of hormones, which can lead to menstrual disorders in women.