Emergency contraception is usually a type of hormonal birth control. It is used to help prevent pregnancy when a woman had sex without using birth control or the birth control was not used properly. Emergency contraception is very effective in preventing pregnancy. The most commonly used method of emergency contraception is pills (also known as the "morning-after pill"). There are two types of emergency contraception pills—combined birth control pills and progestin-only pills.
Emergency contraception must be taken within 120 hours (5 days) of unprotected sex. If you have had unprotected sex, call your doctor's office right away. You also can call the Emergency Contraception Hotline (888-NOT-2-LATE) or visit its web site, www.not-2-late.com, to find a doctor who will provide you with a prescription.
There are other types of emergency contraceptive procedures that your doctor may recommend or describe to you.