Pregnancy Chances After Protected Intercourse

Probability of pregnancy?

On February 14th, I had unprotected intercourse with my boyfriend during the third day of my ovulation period.
On February 27th, we also had unprotected intercourse, and my period is now three days late.
What is the likelihood of pregnancy? Is it possible that I am pregnant?

Min, 20~29 year old female. Ask Date: 2020/03/28

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, the chances of pregnancy should be low.
Wishing you good health.

Reply Date: 2020/03/28

More Info

When considering the chances of pregnancy after protected intercourse, it's important to understand the effectiveness of condoms and the timing of ovulation. Condoms are one of the most reliable forms of contraception when used correctly, with a typical use effectiveness rate of about 85% to 98%. This means that while they significantly reduce the risk of pregnancy, they are not 100% foolproof.

In your case, you mentioned that you had protected intercourse on February 14, which was three days after your ovulation day. If you have a regular menstrual cycle, ovulation typically occurs about 14 days before your next period. If your cycle is around 28 days, this would place ovulation around February 11. Sperm can live inside the female reproductive tract for up to five days, so if you had intercourse on February 14, the sperm could potentially still be viable, but it would be less likely to result in pregnancy since it was a few days post-ovulation.

You also noted that your period was delayed by three days as of February 27. A missed period can be an early sign of pregnancy, but it can also be caused by other factors such as stress, hormonal imbalances, or changes in routine. If you are concerned about the possibility of pregnancy, the best course of action is to take a home pregnancy test. These tests are most accurate when taken after a missed period, as they detect the hormone hCG (human chorionic gonadotropin), which is produced during pregnancy.

If the test is negative and your period does not start, it would be advisable to consult with a healthcare provider. They can help determine the cause of the missed period and provide guidance on your reproductive health.
In summary, while the chances of pregnancy after protected intercourse are low, they are not zero. If you are experiencing a delayed period, taking a pregnancy test is the most straightforward way to assess your situation. If you have further concerns or questions about your menstrual cycle or reproductive health, seeking advice from a healthcare professional is always a good idea.

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