Your Pregnancy Chances After Unprotected Intercourse

I would like to know the probability of getting pregnant?

Hello, doctor.
My last menstrual period was from October 23 to October 28, the one before that was from November 19 to November 24, and this time it was from December 18 to December 23.
On the morning of the 23rd, I had a small amount of menstrual blood, but it stopped in the afternoon.
I had unprotected intercourse with my boyfriend for about one minute in the evening (without ejaculation).
I would like to ask if there is a possibility of pregnancy in this situation?

Anita, 20~29 year old female. Ask Date: 2021/12/23

Dr. Zhang Kunmin reply Obstetrics and Gynecology

Hello, the timing of ovulation may not necessarily be early or on schedule.
There is still a chance of conception even if ejaculation does not occur during intercourse, as pre-ejaculatory fluid may contain sperm.
It is best to consider emergency contraception, although its effectiveness is not 100%, with a failure rate of about 3%.
If your period is more than a week late, it is advisable to check for pregnancy.
Thank you! Wishing you peace and health.
Dr.
Chang

Reply Date: 2021/12/23

More Info

When considering the chances of pregnancy after unprotected intercourse, it is essential to understand the timing of ovulation, the menstrual cycle, and the nature of sperm viability. Based on the information you provided, your menstrual cycle appears to be relatively regular, with your last menstrual period starting on December 18 and ending on December 23.
In a typical 28-day cycle, ovulation usually occurs around 14 days before the start of the next period. However, since your cycles are averaging around 26 to 31 days, ovulation could occur anywhere from day 12 to day 17 of your cycle. Given that your last period ended on December 23, ovulation would likely occur between December 30 and January 3.
The unprotected intercourse you described occurred on December 23, which is just at the end of your menstrual period. While it is less likely to conceive during this time, it is not impossible. Sperm can survive in the female reproductive tract for up to five days, so if you ovulated shortly after your period, there is a chance that sperm from intercourse could still be viable when the egg is released.

In terms of pregnancy chances, the likelihood is relatively low but not zero. The absence of ejaculation during intercourse further reduces the risk, but pre-ejaculate fluid can contain sperm, so there is still a possibility of pregnancy.
If you are concerned about the possibility of pregnancy, consider taking a home pregnancy test if your next period is late. Most home pregnancy tests are accurate about a week after a missed period. Additionally, if you experience any unusual symptoms, such as missed periods, nausea, or breast tenderness, it would be wise to consult a healthcare provider for further evaluation.

In summary, while the chances of pregnancy from the described encounter are low, they are not nonexistent. Understanding your cycle and the timing of ovulation can help you assess your risk more accurately. If you are actively trying to avoid pregnancy, consider discussing contraceptive options with your healthcare provider to find a method that works best for you.

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