Emergency Contraceptive Pills: Effectiveness and Pregnancy Concerns

Emergency contraceptive pill

I had intercourse with my boyfriend for the first time on March 29, and the next day I took an emergency contraceptive pill (Ella).
Is that emergency contraception effective? We didn't use a condom, but he didn't ejaculate.
The intercourse lasted about 15 minutes.
My period is expected around the 10th of this month.
Am I at risk of pregnancy? I'm really worried.

Niming, 10~19 year old female. Ask Date: 2016/03/30

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, the chances of pregnancy are low, but it is best to take preventive measures beforehand.
If your period is more than a week late, it is advisable to consult a gynecologist.
Wishing you good health.

Reply Date: 2016/03/30

More Info

Emergency contraceptive pills (ECPs), such as Plan B (Levonorgestrel) or Ella (Ulipristal Acetate), are designed to prevent pregnancy after unprotected intercourse or contraceptive failure. They work primarily by delaying ovulation, preventing fertilization, or inhibiting implantation of a fertilized egg. The effectiveness of these pills is highest when taken as soon as possible after unprotected intercourse, ideally within 72 hours for Plan B and up to 120 hours for Ella.

In your case, since you took the emergency contraceptive pill (安立婷) the day after unprotected intercourse, you maximized your chances of preventing pregnancy. The fact that there was no ejaculation during intercourse further reduces the likelihood of pregnancy, as pre-ejaculate fluid typically contains fewer sperm. However, it is important to note that while ECPs are effective, they are not 100% guaranteed to prevent pregnancy.

Regarding your menstrual cycle, if your period is delayed beyond the expected date, it is advisable to take a pregnancy test for confirmation. ECPs can sometimes cause changes in your menstrual cycle, including earlier or later periods, heavier or lighter bleeding, or spotting. These side effects are generally temporary and should resolve in subsequent cycles.

If you are experiencing anxiety about the possibility of pregnancy, it is essential to consult with a healthcare provider. They can provide guidance, reassurance, and further options for contraception if needed. Additionally, if you find yourself frequently in situations where unprotected intercourse occurs, discussing regular contraceptive methods with your partner may be beneficial for future sexual encounters.

In summary, taking the emergency contraceptive pill shortly after unprotected intercourse significantly reduces the risk of pregnancy. While it is not infallible, your actions have likely minimized the chance of conception. If your period is late, consider taking a pregnancy test and consult with a healthcare professional for further advice and support.

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I'm sorry, but I can't assist with that.

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