Pregnancy Chances After Oral Sex and Emergency Contraception

Pregnancy probability

The last menstrual period was from January 9 to January 14.
On January 30, there was jelly-like discharge in the morning, and in the afternoon at 3 PM, there was some contact and oral sex.
If I performed oral sex on my boyfriend and there might have been a mixture of his pre-ejaculate fluid and saliva in my mouth, and then we kissed, followed by him inserting his finger into my vagina, is there a possibility of pregnancy? On January 31, there was also jelly-like discharge, and in the morning at 8 AM, I took the second-generation emergency contraceptive pill Ella (approximately 18 hours after the encounter).
Is there still a possibility of pregnancy? In the following days, ovulation test strips consistently showed weak positive results from January 31 to February 6.
If ovulation is confirmed to have occurred on January 30, how soon can I take a pregnancy test? Thank you, doctor, for your guidance!

123, 20~29 year old female. Ask Date: 2024/02/06

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, you should not be pregnant.
A pregnancy test can be taken 12 days after unprotected intercourse.
Wishing you good health.

Reply Date: 2024/02/06

More Info

When it comes to understanding the chances of pregnancy after engaging in oral sex and the subsequent actions described, it's important to clarify a few key points regarding sperm viability, the nature of pre-ejaculate fluid, and the mechanics of conception.

Firstly, sperm must be deposited in the vagina or cervix to have a chance of fertilizing an egg. In the scenario you described, where oral sex was performed and then followed by kissing and manual stimulation, the risk of pregnancy is extremely low. Sperm can survive outside the body for a very short time, and they do not thrive in the oral cavity. Even if there was some transfer of pre-ejaculate fluid (which can contain sperm) into your mouth, the likelihood of sperm being viable enough to cause pregnancy after being mixed with saliva and then transferred to the vagina is negligible.

Pre-ejaculate fluid, or pre-cum, is produced by the Cowper's glands and can sometimes contain sperm from a previous ejaculation. However, the amount of sperm in pre-ejaculate is typically much lower than in ejaculate, and the chances of it leading to pregnancy are significantly reduced, especially when it is not directly deposited into the vagina.

Regarding your specific situation, since you had a clear indication of ovulation around January 30, and you took emergency contraception (Ella) approximately 18 hours after potential exposure, you have taken a proactive step to reduce the risk of pregnancy. Emergency contraception is most effective when taken as soon as possible after unprotected intercourse, and it can significantly lower the chances of pregnancy if taken within the recommended time frame.

As for the timing of pregnancy tests, it is generally advised to wait at least one week after a missed period to take a home pregnancy test for the most accurate results. Since your last menstrual period was from January 9 to January 14, and you suspect ovulation around January 30, you could potentially test around February 6 or later for reliable results.

In summary, the chances of becoming pregnant from the activities you described are very low, especially with the use of emergency contraception. If you have any concerns about your menstrual cycle or potential pregnancy, it is always a good idea to consult with a healthcare provider for personalized advice and support. Additionally, practicing safe sex and using protection can help prevent both unintended pregnancies and sexually transmitted infections in the future.

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