Emergency Contraception on Ovulation Day: Pregnancy Risk Explained - Obstetrics and Gynecology

More Info

---

When considering the risk of pregnancy after unprotected intercourse on the day of ovulation, it is essential to understand the timing of ovulation, the effectiveness of emergency contraception, and the mechanics of sperm and egg interaction.

Ovulation typically occurs around the midpoint of a woman's menstrual cycle, which is when an egg is released from the ovary and is available for fertilization. If intercourse occurs on this day, the chances of sperm meeting the egg are significantly heightened, as sperm can survive in the female reproductive tract for up to five days, while the egg is viable for about 12 to 24 hours post-ovulation.

In your case, you mentioned that there was no ejaculation, but the condom slipped off during intercourse. This situation can still pose a risk for pregnancy because pre-ejaculatory fluid (pre-cum) can contain sperm. Therefore, even without ejaculation, there is a potential risk of pregnancy if sperm from the pre-ejaculate comes into contact with the vaginal canal.

You took ella (ulipristal acetate) as an emergency contraceptive immediately after the incident. Ella is a highly effective emergency contraceptive pill that works primarily by delaying or inhibiting ovulation. It is most effective when taken as soon as possible after unprotected intercourse and can be taken up to 120 hours (five days) after the event. However, its effectiveness is highest when taken before ovulation occurs.

Given that you had intercourse on the day of ovulation and took ella afterward, the risk of pregnancy is not negligible, but the use of ella significantly reduces that risk. Studies have shown that ella can reduce the risk of pregnancy by up to 85% when taken within the appropriate timeframe after unprotected intercourse. However, it is important to note that if ovulation has already occurred, the effectiveness of ella may be diminished, as it primarily works to prevent ovulation rather than disrupt an already established pregnancy.

In summary, while there is a risk of pregnancy due to the timing of intercourse and the condom failure, taking ella immediately afterward is a proactive step that greatly reduces that risk. It is also important to monitor for any signs of pregnancy, such as a missed period, and consider taking a pregnancy test if your period is late.
In terms of future contraceptive measures, it may be beneficial to explore more reliable forms of contraception, such as hormonal birth control pills, intrauterine devices (IUDs), or implants, which can provide continuous protection against unintended pregnancy. Additionally, always ensure that condoms are used correctly to minimize the risk of slippage or breakage.

If you have further concerns or experience any unusual symptoms following this incident, it is advisable to consult with a healthcare provider for personalized advice and support.