Pregnancy Chances After Unprotected Intercourse - Obstetrics and Gynecology

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Pregnancy probability


Hello Doctor: My girlfriend's period ended on June 11.
We had sexual intercourse on June 13 without a condom for a few thrusts, but there was no ejaculation.
After that, we used a condom.
I would like to know what the chances of pregnancy are.
I'm a bit worried.
Thank you, Doctor.

L, 20~29 year old female. Ask Date: 2023/06/15

Dr. Zhang Kunmin reply Obstetrics and Gynecology


Hello, the questioner: There is a possibility of pregnancy even if ejaculation has not occurred, as pre-ejaculatory fluid may contain sperm.
Additionally, the failure rate of using condoms for contraception is over 5%, which is less reliable compared to other methods.
It is recommended to check for pregnancy if your period is more than a week late.
Thank you! Wishing you safety and health.
Dr.
Chang

Reply Date: 2023/06/15

More Info


When it comes to understanding the chances of pregnancy after unprotected intercourse, several factors come into play. In your case, you mentioned that your girlfriend's menstrual period ended on June 11, and you had unprotected intercourse on June 13. Given that menstrual cycles can vary, it's essential to consider the timing of ovulation, which typically occurs about 14 days before the next expected period.
For a woman with a regular cycle of around 28 days, ovulation usually occurs around day 14. However, since you mentioned that your girlfriend's cycle may not be regular, this could affect the timing of ovulation. If she has a longer cycle, ovulation might occur later, which could lower the chances of pregnancy from intercourse on June 13. Conversely, if her cycle is shorter, she may have been close to her ovulation window, increasing the likelihood of pregnancy.

The fact that there was no ejaculation during the unprotected intercourse is also a crucial factor. While the chances of pregnancy are significantly reduced without ejaculation, it is important to note that pre-ejaculate fluid (pre-cum) can contain sperm. Therefore, even without ejaculation, there is still a small risk of pregnancy.

After the unprotected intercourse, you mentioned that a condom was used for subsequent sexual activity, which is a good practice to prevent pregnancy and sexually transmitted infections.
In terms of assessing the risk of pregnancy, it is advisable for your girlfriend to monitor her menstrual cycle closely. If her period is late, she should take a home pregnancy test for confirmation. These tests are generally reliable and can detect pregnancy as early as the first day of a missed period. If the test is positive, it is recommended to consult a healthcare provider for further evaluation and prenatal care.

If your girlfriend experiences any unusual symptoms, such as severe abdominal pain or unusual bleeding, it would be prudent to seek medical attention immediately.
In summary, while there is a possibility of pregnancy from the encounter you described, the risk is relatively low due to the timing and the lack of ejaculation. However, it is essential to remain vigilant and take appropriate steps if her period is delayed. Open communication with your partner about reproductive health and contraception can help alleviate anxiety and ensure both partners are informed and prepared for any potential outcomes.

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