Emergency Contraceptive Pills: Risks of Pregnancy After Use - Obstetrics and Gynecology

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Emergency contraceptive pills (ECPs), commonly referred to as "morning-after pills," are designed to prevent pregnancy after unprotected intercourse or contraceptive failure. They are most effective when taken as soon as possible after the incident, ideally within 72 hours, although some types can be taken up to 120 hours later. The primary mechanism of action for ECPs is to delay or inhibit ovulation, thereby preventing fertilization.
In your case, if you took the emergency contraceptive pill and then had unprotected intercourse again 7 to 8 hours later, the risk of pregnancy depends on several factors. Firstly, if the ECP was taken within the recommended time frame and was effective in preventing ovulation, the likelihood of becoming pregnant from the subsequent unprotected intercourse is still present, as the ECP does not provide ongoing protection after it has been taken.
The effectiveness of ECPs can vary based on the timing of administration relative to the menstrual cycle. If you were close to ovulation when you took the ECP, it may not have been effective in preventing ovulation, and thus, the risk of pregnancy from the subsequent unprotected intercourse could be higher.
Moreover, the type of emergency contraceptive pill matters. For instance, levonorgestrel (Plan B) is most effective when taken within 72 hours, while ulipristal acetate (Ella) can be effective up to 120 hours after unprotected intercourse. However, both types do not provide protection against future acts of unprotected intercourse after they have been taken.

In summary, if you had unprotected sex after taking the emergency contraceptive pill, there is still a risk of pregnancy. The best course of action is to consult with a healthcare provider for further evaluation and potential follow-up options, such as a pregnancy test if your next period is late.
Additionally, if you find yourself in situations where you may need emergency contraception frequently, it may be beneficial to discuss long-term contraceptive options with your healthcare provider. There are various methods available that can provide more reliable and ongoing protection against unintended pregnancies, such as hormonal birth control pills, intrauterine devices (IUDs), or implants.
In conclusion, while ECPs are a valuable option for preventing pregnancy after unprotected intercourse, they are not foolproof, especially if subsequent unprotected intercourse occurs. Always consider consulting with a healthcare professional for personalized advice and to explore more effective long-term contraceptive methods.