Pregnancy Chances After Unprotected Intercourse: Your Concerns Addressed

Is the probability of getting pregnant high?

I had my last menstrual period from September 23 to 26.
I had unprotected intercourse with ejaculation outside on September 22 and again on the morning of October 17, but the male partner did not clean up after ejaculation.
I did not rinse immediately because I was afraid of getting pregnant, so I took Plan B (Ella) on the morning of the 21st.
However, my menstrual period arrived on October 24.
The first day was a small amount of brown discharge, and the second day was a normal color.
However, I am experiencing more abdominal pain than usual and a feeling of nausea.
Is this normal? Is there still a chance that I could be pregnant?

33, 30~39 year old female. Ask Date: 2018/10/26

Dr. Huang Jianzhong reply Obstetrics and Gynecology

Last month, my menstrual cycle was from September 23 to 26.
I had unprotected intercourse with ejaculation outside on September 22 and again on the morning of October 17, but the male partner did not clean up after ejaculation.
I did not rinse immediately because I was afraid of getting pregnant, so I took Plan B (Ella) on the morning of the 21st.
However, my period came on October 24, starting with a small amount of brown discharge and then turning to a normal color the next day.
But I am experiencing more abdominal pain than usual and a feeling of nausea.
Is this normal?
Answer: The increased abdominal pain and nausea are not typical; there should be a low probability of pregnancy, right?
Answer: Since my menstrual cycle was from September 23 to 26 and I got my period on October 24, the likelihood of pregnancy should be low.

Reply Date: 2018/10/26

More Info

When it comes to understanding the chances of pregnancy after unprotected intercourse, it's essential to consider several factors, including the timing of your menstrual cycle, the nature of the intercourse, and any contraceptive measures taken afterward. Based on the information you've provided, let's break down your situation.

You mentioned that your last menstrual cycle (MC) was from September 23 to September 26, and you had unprotected intercourse on September 22 and again on October 17. The timing of your menstrual cycle is crucial here. If your cycles are regular and typically last around 28 days, ovulation would likely occur around the middle of your cycle, approximately 14 days after the first day of your last period. This means that your most fertile window would have been around October 7 to October 13. Since your second unprotected intercourse occurred after this window, the likelihood of pregnancy from that encounter is relatively low.

You also took emergency contraception (Plan B, known as Anlitin in your case) on October 21, which is effective in preventing pregnancy if taken within 72 hours after unprotected intercourse. Given that you took it after your second encounter, it would have significantly reduced the chances of pregnancy from that event.

On October 24, you experienced your menstrual period, which started with a small amount of brown discharge and then transitioned to a normal flow. It's common for menstrual bleeding to start with brownish discharge, which is often older blood being expelled from the uterus. The fact that you had a normal period following the use of emergency contraception is a strong indicator that you are not pregnant.

However, you mentioned experiencing increased abdominal pain and nausea. While some discomfort can be normal during your menstrual cycle, especially if it is heavier or more painful than usual, it’s essential to monitor these symptoms. Increased pain and nausea can sometimes indicate other issues, such as hormonal fluctuations, the effects of emergency contraception, or even conditions like ovarian cysts or endometriosis. If these symptoms persist or worsen, it would be advisable to consult a healthcare provider for further evaluation.

In summary, based on your menstrual cycle timing, the use of emergency contraception, and the onset of your period, the likelihood of pregnancy is very low. However, if you continue to experience unusual symptoms, seeking medical advice is always a prudent step to ensure your health and well-being. Remember, understanding your body and menstrual cycle can help you make informed decisions about your reproductive health.

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