the Effects of Continuous Use of 21-Pill Birth Control - Obstetrics and Gynecology

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21-count pack of oral contraceptive pills?


Hello, 1.
If I finish a pack of 21 contraceptive pills and do not take a seven-day break before starting the next pack, will my menstrual period continue to be delayed? 2.
If I realize that I forgot to take the seven-day break, should I stop taking the pills immediately or finish this pack before stopping? Thank you!

Niming, 20~29 year old female. Ask Date: 2022/09/15

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, if you continue taking the medication, it may delay your period.
Please continue to finish the medication.
Wishing you good health.

Reply Date: 2022/09/15

More Info


When it comes to the continuous use of 21-pill birth control, there are several important considerations to keep in mind regarding menstrual cycles, contraceptive effectiveness, and potential side effects.

1. Continuous Use and Menstrual Cycle: If you take a 21-day pack of birth control pills and do not take the scheduled 7-day break, you will likely delay your menstrual period. This is because the hormones in the pills prevent ovulation and regulate the menstrual cycle. By continuing to take the pills without a break, you are essentially maintaining the hormonal levels in your body, which can suppress the natural menstrual cycle. Many women choose to skip their periods for various reasons, such as convenience or to avoid menstrual symptoms. However, it is essential to note that while this is generally safe for most women, it is always best to consult with a healthcare provider before making such decisions.

2. Forgetting the 7-Day Break: If you realize that you have forgotten to take the 7-day break after finishing a pack of pills, you have a couple of options. You can either continue taking the pills in the current pack until you finish it and then take a break, or you can stop taking the pills immediately. If you choose to continue taking the pills, you will likely not experience a withdrawal bleed (the period-like symptoms that occur during the break) until you complete the pack. If you decide to stop immediately, you may experience a withdrawal bleed sooner, but this could also lead to irregular bleeding or spotting.

It's important to understand that while continuous use of birth control pills can be effective in preventing pregnancy, it may also lead to side effects such as breakthrough bleeding, breast tenderness, or mood changes. Some women may experience changes in their menstrual cycle, including lighter periods or no periods at all, which can be a normal response to hormonal contraceptives.

Additionally, if you are considering continuous use of birth control pills, it is crucial to discuss this with your healthcare provider. They can provide personalized advice based on your health history and any potential risks associated with skipping the break. They can also help you understand how to manage any side effects that may arise from continuous use.

In summary, continuous use of 21-pill birth control can effectively delay your menstrual period, and if you forget to take the 7-day break, you can either continue with the current pack or stop immediately. However, it is essential to consult with a healthcare provider to ensure that this approach is suitable for you and to discuss any potential side effects or concerns.

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