Can You Take Birth Control Pills After Emergency Contraceptive Use? - Obstetrics and Gynecology

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Yes, you can start taking birth control pills after using emergency contraception. However, there are some important considerations to keep in mind regarding timing and effectiveness.

Emergency contraceptive pills (ECPs), such as Plan B or Ella, are designed to prevent pregnancy after unprotected intercourse or contraceptive failure. They work primarily by delaying ovulation, preventing fertilization, or preventing a fertilized egg from implanting in the uterus. ECPs are most effective when taken as soon as possible after unprotected sex, ideally within 72 to 120 hours, depending on the type of pill used.

Once you have taken the emergency contraceptive, you can begin your regular birth control pills immediately or at the time you were originally planning to start them. If you start the birth control pills right after taking the emergency contraceptive, it is important to note that the ECP will not affect the effectiveness of the birth control pills. In fact, starting your regular birth control method can provide ongoing protection against pregnancy.

However, it is crucial to understand that the effectiveness of the birth control pills may not be immediate, especially if you start them after having unprotected intercourse. Most combination birth control pills take about seven days to become fully effective, so it is advisable to use a backup method of contraception, such as condoms, during this initial week. If you are using progestin-only pills, the timing can be a bit different, and you should consult the specific instructions for those pills.

Additionally, if you have taken emergency contraception, it may cause some temporary changes in your menstrual cycle. You might experience irregular bleeding or changes in the timing of your next period. This is normal and should not be a cause for alarm. However, if your period is more than a week late after taking the emergency contraceptive, it is advisable to take a pregnancy test to rule out pregnancy.

In summary, you can safely start taking your regular birth control pills after using emergency contraception. Just be mindful of the timing and use a backup method for the first week to ensure you are fully protected against pregnancy. If you have any further questions or concerns, it is always best to consult with your healthcare provider for personalized advice based on your specific situation.