If you have intercourse and are afraid of pregnancy, you need to take the emergency contraceptive pill in a hurry. The emergency contraceptive pill can be remedied within 72 hours, the earlier you take it the more effective it is, if you take it more than 72 hours, it will have no effect. You have to take one pill orally within 24 hours after intercourse, and take another one within 72 hours, or you can take two pills at a time within 72 hours to achieve the remedial effect. The emergency contraceptive pill is a temporary remedy and cannot be used repeatedly as a regular method of contraception, with great side effects, and should not be used a second time within a month. Taking the drug may cause irregular vaginal bleeding and menstrual disorders. The emergency contraceptive pill only has a contraceptive effect on the previous sexual intercourse. If you do not take measures to have intercourse after taking the drug, it will not have a contraceptive effect on the second time.