Emergency Contraception
Emergency contraception (EC) is a safe and effective means of preventing pregnancy after unprotected intercourse. EC, also known as emergency birth control, has been available for more than 30 years. It contains hormones found in birth control pills and must be started within 120 hours after unprotected intercourse.
EC should be in every woman’s medicine cabinet. It is an important tool for women to prevent unintended pregnancy and the need for abortion.You may want EC if:
- The condom broke or slipped off, and he ejaculated inside your vagina.
- You forgot to take your birth control pills, insert your ring, or apply your patch.
- Your diaphragm, cap, or shield slipped out of place, and he ejaculated inside your vagina.
- You miscalculated your “safe” days.
- He didn’t pull out in time.
- You weren’t using any birth control.
- He forced you to have unprotected vaginal sex.
Emergency contraception (EC)
Can prevent pregnancy after unprotected vaginal intercourse. It is also called the emergency birth control, or backup birth control.
EC must be started up to 120 hours — five days — after unprotected intercourse to reduce the risk of pregnancy. The sooner it is started, the better. EC reduces the risk of pregnancy by 75-89 percent when started within 72 hours.
EC contains hormones found in birth control pills and prevents pregnancy by stopping ovulation or fertilization. Theoretically, EC could also prevent implantation, but that has not been proven scientifically.
Plan B® is a brand of hormone pills approved by the U.S. Food and Drug Administration (FDA) specifically for emergency contraception. Certain birth control pills may also be prescribed for use as emergency contraception. Some EC regimens use "combination pills" with estrogen and progestin — synthetic hormones like the ones a woman's body makes. Others, such as Plan B, are progestin-only.
EC will not cause an abortion or affect an existing pregnancy. Still, a woman should not use emergency contraception if she is pregnant.
IUDs can also be used as backup birth control if inserted within 120 hours — five days — after unprotected intercourse.