Is It Safe to Have Unprotected Sex During Ovulation on Birth Control? - Obstetrics and Gynecology

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Emergency contraceptive pill, ejaculation inside?


Hello, doctor.
My girlfriend wants to have unprotected sex, so she has been taking the contraceptive pill, Mifeprex, for a full month and has stopped for seven days.
She is currently on her second pack (her period has not arrived).
We will be going on a trip next week, and since my girlfriend is eager to try it out and has been taking her pills regularly, the timing coincides with her ovulation period.
Is the contraceptive effect reliable in this situation? Can we have unprotected sex with ejaculation inside?

Ren, 20~29 year old female. Ask Date: 2023/08/01

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it should be safe.
Wishing you good health.

Reply Date: 2023/08/01

More Info


When it comes to the question of whether it is safe to have unprotected sex during ovulation while on birth control, there are several important factors to consider.
Firstly, it is essential to understand how hormonal birth control works. Birth control pills, like the one your girlfriend is taking (in this case, 美適儂), are designed to prevent ovulation, thicken cervical mucus, and thin the uterine lining. When taken correctly, they are highly effective at preventing pregnancy, with a typical use effectiveness rate of about 91% to 99%. This means that while there is a small chance of becoming pregnant, the risk is significantly reduced when the pills are taken consistently and correctly.

However, since your girlfriend has just completed one month of taking the pill and is now in her second month, it is crucial to ensure that she has been taking the pills as directed. If she has missed any doses or taken them inconsistently, the effectiveness of the birth control may be compromised. Additionally, if she has just started a new pack and is in the first week of taking the pills, the risk of ovulation may still be present, especially if she has not been on the pill for at least seven consecutive days.

Regarding the timing of unprotected sex during ovulation, it is important to note that ovulation typically occurs around the midpoint of the menstrual cycle, which can vary from person to person. If your girlfriend is indeed ovulating, having unprotected sex during this time increases the risk of pregnancy, even if she is on birth control.
In terms of safety, while hormonal birth control is effective, no method is 100% foolproof. If you and your girlfriend are considering having unprotected sex, it is advisable to use additional contraceptive methods, such as condoms, to further reduce the risk of pregnancy and sexually transmitted infections (STIs). Condoms provide a barrier that not only helps prevent pregnancy but also protects against STIs, which is particularly important if either partner has had previous sexual partners.

If your girlfriend is adamant about having unprotected sex, it is crucial to have an open and honest discussion about the potential risks involved, including the possibility of pregnancy and STIs. You may also want to consider consulting with a healthcare professional for personalized advice based on your girlfriend's health history and contraceptive use.

In conclusion, while hormonal birth control can be effective in preventing pregnancy, it is essential to ensure that it is being taken correctly and consistently. If there are any doubts about its effectiveness, especially during ovulation, using additional protection is highly recommended. Always prioritize communication and mutual consent when making decisions about sexual activity, and consider the implications of unprotected sex carefully.

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Dr. Huang Zifei reply Obstetrics and Gynecology
Hello Mr. Chiu: If you take the contraceptive pill regularly without missing any doses, it will effectively suppress ovulation and provide contraceptive protection, so ejaculation inside is not an issue. However, the effectiveness of the contraceptive pill can be affected by othe...

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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the chances of pregnancy should be low. Wishing you good health.

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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the chances of pregnancy should be low. Wishing you good health.

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