Pregnancy Chances After Unprotected and Protected Intercourse

Q: Pregnancy Chances After Unprotected and Protected Intercourse

Hello, the questioner： There is a possibility of pregnancy even if ejaculation has not occurred during intercourse, as pre-ejaculatory fluid may contain sperm. <br>It is recommended to check for pregnancy if your period is more than a week late. <br>Thank you! Wishing you peace a

Probability of Pregnancy

Hello Doctor, my girlfriend and I were intimate on November 10 and November 24.
On November 10, we initially did not use protection, but after a few times, we put on a condom before ejaculation.
On November 24, we used a condom throughout.
I took pregnancy tests on November 27 and December 2, both showing one line, but my girlfriend is now three days late.
I would like to ask if there is a possibility of pregnancy in this situation.
Additionally, my girlfriend took medication for a cold after November 20; could this have any effect? Thank you for your patient response.

Niming, 20~29 year old female. Ask Date: 2022/12/06

Dr. Zhang Kunmin reply Obstetrics and Gynecology

Hello, the questioner: There is a possibility of pregnancy even if ejaculation has not occurred during intercourse, as pre-ejaculatory fluid may contain sperm.
It is recommended to check for pregnancy if your period is more than a week late.
Thank you! Wishing you peace and health.
Dr.
Chang

Reply Date: 2022/12/06

More Info

When assessing the chances of pregnancy after both protected and unprotected intercourse, it is essential to consider several factors, including the timing of the menstrual cycle, the use of contraception, and any medications that may affect fertility.

In your case, you mentioned having intimate relations with your girlfriend on November 10 and November 24. On November 10, you started without a condom but switched to using one before ejaculation. On November 24, you used a condom throughout the entire encounter. The fact that you used a condom for the majority of the sexual activity on November 10 and consistently on November 24 significantly reduces the risk of pregnancy. Condoms, when used correctly, are about 98% effective at preventing pregnancy. However, they can fail due to breakage or slippage, so it is always wise to check for any signs of failure after intercourse.

You also mentioned that you took two pregnancy tests on November 27 and December 2, both of which returned negative results. Since you are now three days late for your expected period, it is understandable to feel anxious about the possibility of pregnancy. It is important to note that a negative pregnancy test is generally reliable, especially if taken after a missed period. However, if you continue to experience a delay in your menstrual cycle, it may be advisable to take another test or consult a healthcare provider for further evaluation.

Regarding the medications your girlfriend took for her cold after November 20, most common over-the-counter medications, such as decongestants and antihistamines, do not significantly affect the efficacy of hormonal contraceptives. However, certain antibiotics can interfere with birth control pills, but cephalexin, which is a common antibiotic, is generally not known to reduce the effectiveness of hormonal contraceptives. If your girlfriend was on hormonal birth control and continued to take it as prescribed, the chances of pregnancy remain low.

In summary, based on the information provided, the likelihood of pregnancy appears to be low due to the use of condoms during sexual encounters and the negative pregnancy tests. However, if your girlfriend's period does not arrive soon, it would be prudent to consult a healthcare professional for further advice. They may recommend a blood test for pregnancy, which is more sensitive than home urine tests, or explore other potential causes for her missed period, such as stress, hormonal imbalances, or changes in weight or lifestyle.

In conclusion, while the risk of pregnancy seems minimal given your precautions, it is always best to stay informed and proactive about reproductive health. If you have any further concerns or questions, do not hesitate to reach out to a healthcare provider for personalized guidance.

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