The oral contraceptive pill is usually taken within 72 hours after intercourse. Most of the oral contraceptive pills are emergency contraceptive pills, which can only be taken without sexual intercourse. The oral contraceptive pill should be taken on an empty stomach or two hours after a meal, which will not affect the effectiveness of the emergency contraceptive pill. Also, if you need to have intercourse after taking the emergency contraceptive pill, you need to have intercourse with a condom to avoid the chance of unintended pregnancy. This is because the emergency contraceptive pill only provides a certain amount of contraception beforehand, but not afterwards. You can also go to a pharmacy and buy a morning pregnancy test about 12 days after intercourse and take a mid-urethral urine test to rule out the possibility of pregnancy.