Pregnancy Chances and Menstrual Delays After Intimacy

What is the likelihood of getting pregnant this way?

I searched a lot online but couldn't find a similar situation.
My situation is as follows: On July 19, I manually stimulated my girlfriend, but there may have been contact with a small amount of pre-ejaculate fluid.
Her last menstrual period started on June 16, and since then, her period has not arrived.
I would like to ask: 1.
What is the likelihood of pregnancy in this case? 2.
Since her period was expected but has not arrived, when would be the best time to take a pregnancy test for accurate results?

AA, 10~19 year old female. Ask Date: 2023/08/02

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, you should not be pregnant.
If you're still concerned, you can take a pregnancy test.
Wishing you good health.

Reply Date: 2023/08/02

More Info

When it comes to understanding the chances of pregnancy and menstrual delays after intimate contact, several factors need to be considered. Based on the scenario you provided, where you engaged in manual stimulation with your girlfriend and there was potential contact with pre-ejaculatory fluid, let's break down the questions.

1. Chances of Pregnancy: The likelihood of pregnancy from manual stimulation (using hands) is generally low, especially if there was no direct ejaculation into the vagina. However, it is important to note that pre-ejaculatory fluid (pre-cum) can contain sperm, albeit in smaller quantities than ejaculate. If any sperm from the pre-ejaculatory fluid made its way into the vaginal canal, there is a possibility, albeit small, of pregnancy. The risk increases if your girlfriend has a regular menstrual cycle and is in her fertile window, which typically occurs around ovulation (approximately 14 days before the next expected period). Since her last menstrual period started on June 16, if her cycle is regular, she would likely have ovulated around the beginning of July, making the timing of your encounter potentially relevant.

2. Menstrual Delay: If your girlfriend's period was expected around July 16 and it has not arrived, this could be due to several reasons. Stress, hormonal imbalances, changes in weight, or other health factors can all contribute to a delayed period. Given that her period is late, it would be advisable for her to take a home pregnancy test. The best time to take a pregnancy test is usually after a missed period, as this allows for the hormone hCG (human chorionic gonadotropin) to build up to detectable levels in urine. In this case, since her period was due on July 16, she should ideally wait until at least a week after this date for the most accurate result, which would be around July 23 or later.

In summary, while the chances of pregnancy from the described scenario are low, they are not zero. If your girlfriend's period does not arrive soon, taking a pregnancy test after a week of the missed period would provide clarity. If the test is positive, or if she continues to experience irregularities in her menstrual cycle, it would be wise for her to consult a healthcare provider for further evaluation and guidance.
It's also important to remember that menstrual cycles can vary significantly among individuals, and a missed period does not always indicate pregnancy. Factors such as stress, illness, and lifestyle changes can also play a significant role in menstrual regularity. If there are any concerns regarding reproductive health or potential pregnancy, seeking professional medical advice is always the best course of action.

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