Pregnancy Risks After Unprotected Intercourse: Key Insights

Is it possible to get pregnant?

Hello, I would like to ask about the chances of pregnancy.
My girlfriend's last menstrual period was from September 8 to September 12.
We had unprotected intercourse on September 13, September 21, and October 3.
On September 13, there was brief penetration, and I pulled out when I felt I was about to ejaculate, then used my hand to finish outside.
On September 21, there were three instances of penetration, each lasting about five thrusts, and I pulled out and finished outside after a while.
On October 3, there was penetration for a while, and again I pulled out and finished outside after a long time.
As of yesterday, her period has not arrived yet (October 9).
What are the chances of her being pregnant? Thank you.

Xiao Pang, 30~39 year old female. Ask Date: 2019/10/10

Dr. Huang Jianzhong reply Obstetrics and Gynecology

Your girlfriend's last menstrual period was from September 8 to September 12.
During this time, you had unprotected intercourse on September 13, September 21, and October 3.
On September 13, you withdrew before ejaculation and used a condom to finish.
On September 21, you had intercourse three times, each lasting about five thrusts, and withdrew before ejaculation, using a condom afterward for a longer duration.
On October 3, you had intercourse for a while, withdrew, and then used a condom for an extended period before ejaculation.

Given that her period has not arrived as of yesterday (October 9), you are inquiring about the likelihood of pregnancy.
Based on the information provided, the chances of pregnancy are low.

Reply Date: 2019/10/10

More Info

When assessing the risk of pregnancy after unprotected intercourse, several factors must be considered, including the timing of the menstrual cycle, the nature of the sexual activity, and the use of contraceptive methods. Based on the information provided, your girlfriend's last menstrual period was from September 8 to September 12, and you engaged in sexual intercourse on September 13, September 21, and October 3, all without a condom.
Understanding the menstrual cycle is crucial in evaluating pregnancy risk. A typical menstrual cycle lasts about 28 days, but it can vary from person to person. Ovulation usually occurs around 14 days before the next expected period. In your case, if her cycle is regular, ovulation would likely occur around September 22, which is close to the date of your second sexual encounter. This timing is significant because sperm can survive in the female reproductive tract for up to five days, meaning that intercourse occurring just before or during ovulation poses a higher risk of pregnancy.

Regarding the sexual activities you described:
1. September 13: You mentioned that you engaged in withdrawal (pulling out) before ejaculation. While this method can reduce the risk of pregnancy, it is not foolproof. Pre-ejaculate fluid (pre-cum) can contain sperm, and if any sperm were present, there is still a risk of pregnancy.

2. September 21: Similar to the first encounter, you again used withdrawal. The same risks apply here, especially since this date is close to the ovulation window.

3. October 3: By this date, your girlfriend would likely be past her ovulation window if her cycle is regular. However, if she has irregular cycles, ovulation could occur later, which increases the risk of pregnancy from this encounter.

Now, considering that her period was expected around October 8 and has not yet arrived as of October 9, there is a possibility of pregnancy. The absence of menstruation is one of the early signs of pregnancy, but it is not definitive. Other factors could contribute to a delayed period, such as stress, hormonal imbalances, or changes in lifestyle.

To assess the likelihood of pregnancy accurately, it is advisable for your girlfriend to take a home pregnancy test. These tests are most reliable when taken after a missed period, as they measure the hormone hCG (human chorionic gonadotropin) that is produced during pregnancy. If the test is positive, it is important to schedule an appointment with a healthcare provider for further evaluation and guidance.

In summary, the risk of pregnancy from the encounters you described is present, especially with the timing of the sexual activities in relation to her ovulation. It is essential to use reliable contraception to prevent unintended pregnancies in the future. If your girlfriend's period does not arrive soon, a pregnancy test is the best next step to clarify the situation.

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