Emergency Contraceptive Pills: What to Do After Vomiting? - Obstetrics and Gynecology

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Emergency contraceptive pills (ECPs) are a critical option for preventing unintended pregnancies after unprotected intercourse or contraceptive failure. When it comes to the situation you've described, where you vomited shortly after taking an ECP, there are specific guidelines to follow.

First, it's essential to understand how ECPs work. They primarily function by delaying ovulation, preventing fertilization, or inhibiting implantation of a fertilized egg. The effectiveness of ECPs is highest when taken as soon as possible after unprotected intercourse, ideally within 72 hours, although some types can be effective up to 120 hours post-intercourse.

In your case, since you took the ECP at 11:00 PM and vomited at approximately 11:20 PM, the timing of your vomiting is crucial. If you vomit within two hours of taking the pill, it is generally recommended to take another dose. Since you mentioned that you took another pill from the next day's supply, you are on the right track. However, it's important to note that taking more than the recommended dose can lead to side effects without increasing effectiveness.

Now, regarding your question about how to proceed with the timing of your next doses: If you have taken a second ECP as a replacement for the one you vomited, you should continue taking the remaining pills as directed on the package. If you are using a two-dose regimen (like Plan B One-Step), you typically take one pill and then a second pill 12 hours later. If you have already taken the second pill, you should not need to start a new pack unless advised by a healthcare professional.

In terms of calculating dates for your next doses, if you are following a regimen that requires two doses, ensure that you take the second dose within the recommended time frame. If you have any remaining pills from the pack, you can continue to take them as directed. If you are unsure or if your symptoms persist, it is advisable to consult with a healthcare provider for personalized advice.

Additionally, if you experience any side effects such as severe nausea, vomiting, or abdominal pain, or if your menstrual cycle is significantly delayed beyond a week, you should seek medical attention. These could be signs of pregnancy or other complications that may require further evaluation.

In summary, after vomiting shortly after taking an ECP, taking an additional dose is appropriate if the vomiting occurs within two hours. Continue with the remaining doses as per the instructions on the package. If you have any concerns or experience unusual symptoms, do not hesitate to reach out to a healthcare professional for guidance. Remember, while ECPs are effective, they are not intended for regular contraceptive use, and discussing long-term contraceptive options with a healthcare provider may be beneficial.