Can You Get Pregnant While Taking Birth Control Pills? - Obstetrics and Gynecology

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Can I get pregnant?


I am taking the birth control pill for the first time and have been on it for nine days.
Today is my ovulation period, and I had intercourse with my boyfriend, who ejaculated inside me.
Is there a chance I could get pregnant?

Niming, 10~19 year old female. Ask Date: 2017/06/05

Dr. Huang Jianzhong reply Obstetrics and Gynecology


If you have been taking the oral contraceptive pill for nine days and today coincides with your ovulation period, having unprotected intercourse with ejaculation inside should not result in pregnancy.

Reply Date: 2017/06/05

More Info


When it comes to the effectiveness of birth control pills, it's important to understand how they work and the timing of their use. Birth control pills, also known as oral contraceptives, are designed to prevent ovulation, thicken cervical mucus, and thin the uterine lining, which collectively help to prevent pregnancy. However, their effectiveness can vary based on several factors, including when you start taking them and whether you take them consistently.

If you have been taking the birth control pill for nine days and are currently in your ovulation period, there is a possibility of pregnancy if you had unprotected intercourse. Most birth control pills require at least seven days of consistent use to become fully effective at preventing ovulation. If you started taking the pill on the first day of your period, you would be protected from pregnancy right away. However, if you started taking the pill at another time in your cycle, you may not be fully protected yet.

In your case, since you mentioned that you are on day nine of taking the pill and it coincides with your ovulation period, there is a risk of pregnancy if you had unprotected sex. If the pills are taken correctly and consistently, the chance of becoming pregnant is significantly reduced, but no method is 100% effective.
It's also worth noting that certain factors can affect the effectiveness of birth control pills, such as:
1. Missed Pills: If you missed any doses or took them at irregular times, this could decrease their effectiveness.

2. Drug Interactions: Some medications can interfere with the effectiveness of birth control pills, including certain antibiotics and medications for seizures.

3. Gastrointestinal Issues: Vomiting or severe diarrhea can also affect how well the pill is absorbed.

If you are concerned about the possibility of pregnancy, you may want to consider taking a home pregnancy test if your period is late or consult with a healthcare provider for further guidance. Additionally, if you are looking for immediate protection against pregnancy, consider using a backup method, such as condoms, until you have been on the pill for at least seven days.

In summary, while birth control pills are highly effective when taken correctly, there is still a risk of pregnancy if they are not taken consistently or if you are in the early days of starting the pill. If you have any further questions or concerns about your specific situation, it is always best to consult with a healthcare professional who can provide personalized advice based on your health history and circumstances.

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