Can You Start Taking Emergency Contraceptive Pills on Day Six of Your Period? - Obstetrics and Gynecology

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First-time use of pre-exposure prophylaxis (PrEP)?


I would like to ask the doctor if I can start taking the emergency contraceptive pill on the sixth day of my period for the first time, or do I need to wait until my next period to start taking it?

Hsu Chia-Yu, 20~29 year old female. Ask Date: 2023/05/30

Dr. Chen Zhiyu reply Obstetrics and Gynecology


Hello, it is recommended to first consult a gynecologist for an evaluation before taking emergency contraceptive pills for the first time.
Thank you.

Reply Date: 2023/05/30

More Info


When it comes to starting emergency contraceptive pills (ECPs), it's important to clarify the distinction between emergency contraception and regular contraceptive methods. Emergency contraceptive pills, such as Plan B (levonorgestrel) or Ella (ulipristal acetate), are designed to prevent pregnancy after unprotected intercourse or contraceptive failure. They are not intended for regular use as a primary contraceptive method.

To address your question directly: Yes, you can start taking emergency contraceptive pills on day six of your period, but it’s essential to understand the context. If you are referring to emergency contraceptive pills, they can be taken at any point in your menstrual cycle if you have had unprotected sex. However, their effectiveness may vary depending on where you are in your cycle and when you had unprotected intercourse.

If you are asking about starting a regular birth control pill regimen, it is generally recommended to start taking the pill at least seven days before you have unprotected sex to ensure maximum effectiveness. If you start taking the pill on day six of your period, you may not be fully protected until you have taken the pill consistently for seven days. Therefore, if you are starting a new regimen of birth control pills, it is often advised to wait until the first day of your next period or to consult with your healthcare provider for the best timing based on your individual circumstances.

In terms of safety, starting ECPs on day six of your period is safe, but it is crucial to remember that ECPs are not intended for regular contraceptive use. They are most effective when taken as soon as possible after unprotected intercourse, ideally within 72 hours for Plan B and up to 120 hours for Ella.
If you are considering starting a regular contraceptive method, it’s advisable to consult with your healthcare provider. They can provide personalized advice based on your health history, lifestyle, and specific needs. They can also help you understand the different types of contraceptive methods available, including hormonal options like the pill, patch, or IUD, and non-hormonal options like condoms or copper IUDs.

In summary, while you can take emergency contraceptive pills on day six of your period if you had unprotected sex, for regular birth control pills, it is best to consult with your healthcare provider to determine the most effective and safe approach for your situation. Always ensure that you have a clear understanding of how your chosen contraceptive method works and when it becomes effective to avoid unintended pregnancies.

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Hello, start taking the contraceptive pill on the fifth day of your menstrual period. Wishing you good health.

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Hello, it is generally fine to start taking birth control pills on the fifth day of your menstrual period; just continue to monitor your situation. Wishing you good health.

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