Pregnancy Risks After Unprotected Intercourse - Obstetrics and Gynecology

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Probability of pregnancy?


Having unprotected intercourse two days after a missed period, even if your partner did not ejaculate inside, does carry some risk of pregnancy.
However, since you took emergency contraception afterward, this significantly reduces the likelihood of pregnancy.
It's important to follow up with a healthcare provider for further guidance and to discuss your menstrual cycle and any concerns you may have.

Min, 10~19 year old female. Ask Date: 2019/12/31

Dr. Huang Jianzhong reply Obstetrics and Gynecology


Having unprotected intercourse with my boyfriend two days after my period was delayed, and he did not ejaculate inside, what are the chances of pregnancy? I took emergency contraception afterward.
Answer: The chances are not high.

Reply Date: 2019/12/31

More Info


When it comes to understanding pregnancy risks after unprotected intercourse, several factors come into play. In your situation, you mentioned that you had unprotected sex two days after your expected period and that your boyfriend did not ejaculate inside you. You also took emergency contraception afterward. Let's break down these elements to provide a clearer picture of your pregnancy risk.

1. Timing of Intercourse: The timing of your menstrual cycle is crucial. If you have a regular cycle, ovulation typically occurs around 14 days before your next period. Since you mentioned that your period was delayed by two days, it is possible that you were approaching ovulation, depending on your cycle length. Sperm can live inside the female reproductive tract for up to five days, so if you ovulate soon after intercourse, there is a chance of pregnancy.

2. Withdrawal Method: The fact that your boyfriend did not ejaculate inside you reduces the risk of pregnancy, but it is important to note that pre-ejaculate fluid (pre-cum) can contain sperm. While the likelihood of pregnancy from pre-ejaculate is lower than from ejaculation, it is still a potential risk.

3. Emergency Contraception: Taking emergency contraception (EC) is a proactive step to reduce the risk of pregnancy after unprotected intercourse. EC is most effective when taken as soon as possible after the incident, ideally within 72 hours, but it can work up to five days after. The effectiveness of EC decreases the longer you wait, but it can significantly lower the chances of pregnancy if taken promptly.

4. Pregnancy Testing: If you are concerned about the possibility of pregnancy, it is advisable to wait until at least the first day of your expected period to take a home pregnancy test for the most accurate result. Testing too early may lead to a false negative.

5. Alcohol Consumption: If you consumed alcohol before knowing you were pregnant, it is understandable to be concerned about its effects on a potential pregnancy. Research indicates that alcohol consumption during early pregnancy can pose risks to fetal development, particularly if consumed in significant amounts. However, if you were not pregnant at the time of drinking, there would be no impact on a future pregnancy.

6. Consulting a Healthcare Provider: If you have further concerns about your risk of pregnancy or the effects of any substances on a potential pregnancy, it is best to consult a healthcare provider. They can offer personalized advice based on your medical history and current situation.

In summary, while there is a possibility of pregnancy given the circumstances, taking emergency contraception significantly reduces that risk. Monitoring your menstrual cycle and taking a pregnancy test at the appropriate time will provide clarity. If you have any lingering concerns or experience unusual symptoms, seeking medical advice is always a prudent choice.

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Hello, the probability is likely low, but it is advisable to use contraception at all times for safety. Wishing you good health.

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