Can I Get Pregnant? Risks After Unprotected Intercourse - Obstetrics and Gynecology

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Can I get pregnant?


Hello doctor, I had intercourse with my girlfriend on December 23rd.
After showering, we started right away, and initially, the condom was put on incorrectly.
At that moment, I didn't think much of it and continued.
It was only after we finished that I realized there might have been some pre-ejaculate fluid at the tip of the condom.
Although we only had external genital contact without direct penetration, I was still particularly worried.
Therefore, I went to buy emergency contraception (a single dose of Ella) and took it within 1.5 hours.
Since my girlfriend's cycle indicates that she might be in her ovulation or fertile window, I am especially concerned.
Her last menstrual period started around December 9th, close to midnight.
Doctor, what is the likelihood of pregnancy in this situation?

Huang, 10~19 year old female. Ask Date: 2020/12/27

Dr. Chen Zhiyu reply Obstetrics and Gynecology


Regarding your concerns, the response is as follows: Based on the contraceptive methods you described, it seems that you have taken appropriate precautions, so the likelihood of pregnancy should be low.
However, please keep an eye on your partner's next menstrual cycle.
If there are still any missed periods, it is advisable to take a home pregnancy test for more certainty.
Thank you for your inquiry, and I wish you good health and happiness.

Reply Date: 2020/12/27

More Info


When it comes to the risk of pregnancy after unprotected intercourse, several factors come into play, particularly the timing of the menstrual cycle, the use of contraceptives, and the nature of the sexual activity. In your case, you mentioned that you had intercourse on December 23, and considering your girlfriend's last menstrual period started around December 9, it is indeed possible that she was in her fertile window, especially if her cycle is regular.

The fertile window typically occurs around ovulation, which is usually about 14 days before the start of the next menstrual period. If your girlfriend has a regular cycle of about 28 days, ovulation would likely occur around December 23, making it a high-risk time for pregnancy. However, since you used a condom, albeit incorrectly at first, and took emergency contraception (Plan B) within 1.5 hours, these actions significantly reduce the likelihood of pregnancy.

Emergency contraceptive pills (ECPs) like Plan B are most effective when taken as soon as possible after unprotected intercourse. They work primarily by delaying ovulation, preventing fertilization, or preventing a fertilized egg from implanting in the uterus. The sooner you take the pill after the incident, the higher the efficacy, which is why your prompt action is beneficial.

Regarding your concern about pre-ejaculate fluid (pre-cum), it can contain sperm, but the amount is generally much lower than that found in ejaculate. If there was no direct penetration and only external contact, the risk of pregnancy is lower, especially since you took the emergency contraceptive.

In terms of the probability of pregnancy, while it is difficult to provide an exact percentage, the combination of using a condom, even if it was initially placed incorrectly, and taking emergency contraception significantly lowers the risk. Studies suggest that ECPs can reduce the risk of pregnancy by up to 89% when taken within 72 hours of unprotected intercourse.

It's also important to note that if your girlfriend does not get her period within three weeks of the incident, it would be advisable for her to take a pregnancy test to confirm whether or not she is pregnant. Additionally, if she experiences any unusual symptoms or has concerns, she should consult a healthcare provider for further evaluation.

In summary, while there is a risk of pregnancy due to the timing of intercourse and the nature of the contact, your actions of using a condom and taking emergency contraception significantly mitigate that risk. It's always a good practice to use reliable contraception consistently to avoid such concerns in the future. If you have further questions or need reassurance, don't hesitate to reach out to a healthcare professional for personalized advice.

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