If you take the emergency contraceptive pill during ovulation, as long as it is taken orally within 72 hours after intercourse, you have little chance of getting pregnant. This is because emergency contraceptive pills mainly inhibit ovulation and change the thickness of the endometrium, preventing the fertilized egg from being laid to achieve contraception. However, due to individual differences, some people may not be able to prevent ovulation or change the thickness of the endometrium after taking the pill to prevent the fertilized egg from being laid, which may result in pregnancy, so the contraceptive effect of the pill is not 100%. It is true that there are people who take emergency contraceptive pills on time but still have the possibility of pregnancy. Therefore, it is advisable not to take the pill as a last resort, and it is better to use a condom during the whole process of sexual life, which is safe and hygienic and has a good contraceptive effect.