Pregnancy Chances After Delayed Menstruation and First Sexual Experience

Pregnancy probability

My period is occasionally late.
My cycle started on November 28, and I was supposed to get it on December 28.
I had sexual intercourse with my boyfriend on December 16; it was my first time, and he used a condom throughout (it was kept in his wallet, so I'm not sure how long it had been there).
Based on this, I would like to ask the doctor a few questions: 1.
My period hasn't come, but I occasionally have lower abdominal pain and some discharge.
What is the likelihood of pregnancy? 2.
Is it normal for periods to be late during puberty and after the first sexual intercourse? Thank you, doctor, for patiently answering my questions; I really appreciate your valuable response!

Nian, 10~19 year old female. Ask Date: 2024/01/12

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, the chances of pregnancy should be low, but you can take a pregnancy test to check.
Wishing you good health.

Reply Date: 2024/01/12

More Info

Dear User,
Thank you for your questions regarding your menstrual cycle, potential pregnancy, and the effects of your first sexual experience. Let's address your concerns one by one.

1. Pregnancy Chances with Delayed Menstruation: Given that your last menstrual period (LMP) was on November 28 and you had sexual intercourse on December 16, it is important to consider the timing of ovulation. In a typical 28-day cycle, ovulation usually occurs around 14 days after the first day of your last period, which would be around December 12. If you had unprotected sex during your fertile window, there is a possibility of pregnancy. However, since you mentioned that your boyfriend used a condom, this significantly reduces the likelihood of pregnancy, provided that the condom was used correctly and did not break or slip off during intercourse.

The symptoms you are experiencing, such as lower abdominal pain and unusual discharge, could be related to various factors, including hormonal changes, stress, or even an infection. It is not uncommon for women to experience some discomfort or changes in discharge around the time they expect their period, especially if their cycle is irregular. If your period does not arrive within a week or so of when you expect it, it would be advisable to take a home pregnancy test for confirmation. These tests are most accurate when taken after a missed period.

2. Delayed Menstruation After First Sexual Experience: It is quite common for young women to experience changes in their menstrual cycle after becoming sexually active, especially if it is their first time. Factors such as anxiety, stress, hormonal fluctuations, and changes in routine can all contribute to a delayed period. The body can react to new experiences in various ways, and it may take some time for your cycle to stabilize.
If your period is delayed and you are concerned about pregnancy, taking a home pregnancy test is a good step. These tests are designed to detect the hormone hCG, which is produced during pregnancy, and they are most reliable when taken after a missed period. If the test is positive, it is important to follow up with a healthcare provider for further evaluation and guidance.

In conclusion, while the chances of pregnancy are reduced due to the use of a condom, it is still wise to monitor your symptoms and take a pregnancy test if your period does not arrive. Additionally, if you continue to experience discomfort or have concerns about your menstrual cycle, consulting with a healthcare professional would be beneficial. They can provide personalized advice and support based on your specific situation.

Take care, and I hope this information helps clarify your concerns. If you have any further questions, feel free to ask!

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