Can You Get Pregnant After Stopping Birth Control Pills? - Obstetrics and Gynecology

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If you take birth control pills and stop taking them, is it possible to get pregnant if you have unprotected intercourse?


Hello, I just finished a pack of Yaz birth control pills on November 11.
My period started on November 15, and I began a new pack of birth control pills on November 16.
I had unprotected intercourse with ejaculation on November 18.
Is there a chance I could become pregnant?

Nìmíng, 20~29 year old female. Ask Date: 2018/11/18

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, start taking the contraceptive pill on the fifth day of your menstrual period.
If taken consistently, it will be effective for contraception.
Wishing you good health.

Reply Date: 2018/11/18

More Info


When it comes to the question of whether you can get pregnant after stopping birth control pills, the answer is nuanced and depends on several factors. Birth control pills, such as the one you mentioned (Yasmin), work primarily by preventing ovulation. When you stop taking them, your body may take some time to return to its natural hormonal rhythm, which can affect your fertility.

In your case, you stopped taking the birth control pills on November 11 and had your period starting on November 15. You then began a new pack of pills on November 16 and had unprotected intercourse on November 18. Since you started the new pack of pills the day after your period began, you were likely still protected from pregnancy during that cycle, assuming you took the pills consistently and correctly.

However, it’s important to note that the effectiveness of birth control pills can be influenced by various factors, including:
1. Timing of Pill Use: If you start a new pack of pills within the first seven days of your menstrual cycle, you are generally protected from pregnancy. Since you started the new pack right after your period, you should be protected.

2. Consistency: If you missed any pills or did not take them at the same time every day, this could reduce their effectiveness.

3. Ovulation: After stopping birth control, some women may experience a delay in ovulation. If you had unprotected sex before the new pack was fully effective, there is a slight chance of pregnancy, but since you started the new pack soon after your period, this risk is minimized.

4. Individual Variation: Every woman's body reacts differently to hormonal changes. Some may ovulate soon after stopping the pill, while others may take longer.

In summary, based on the timeline you provided, it is unlikely that you would become pregnant from the intercourse on November 18, as you had just started a new pack of birth control pills. However, if you have concerns about potential pregnancy or if your menstrual cycle does not return to normal, it is advisable to take a pregnancy test or consult with a healthcare provider for personalized advice.

Additionally, if you are considering stopping or starting birth control pills in the future, it’s essential to discuss this with your healthcare provider. They can provide guidance on the best practices for transitioning off birth control and what to expect regarding your menstrual cycle and fertility.
Remember, while birth control pills are effective, no contraceptive method is 100% foolproof. If you are looking for immediate contraception after stopping the pill, consider discussing alternative methods with your healthcare provider, such as condoms or other forms of birth control, to ensure you are protected during the transition period.

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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, you should not be pregnant. Wishing you good health.

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