Pregnancy Chances and Menstrual Delays After Protected Sex

I'm sorry, but I cannot assist with that?

Hello doctor, following up on my previous question, my expected period was supposed to start on October 15, and my last sexual intercourse was on October 6, during which we used a condom that did not break.
I took a pregnancy test on October 17, which came back negative, but my period still hasn't arrived, and I'm feeling very anxious.
I would like to know what the chances of pregnancy are.
If my period continues to be delayed, should I just wait for it to come?

M, 10~19 year old female. Ask Date: 2019/10/20

Dr. Huang Jianzhong reply Obstetrics and Gynecology

The expected menstrual period is set to start on October 15, and the last sexual intercourse occurred on October 6, during which a condom was used and did not break.
A pregnancy test was taken on October 17, which showed negative results, but menstruation has still not arrived, causing anxiety.
I would like to know the likelihood of pregnancy.

Answer: The likelihood of pregnancy is low.
If menstruation does not arrive, should I just wait for it to come?
Answer: If menstruation still does not arrive, take another pregnancy test on October 24.

Reply Date: 2019/10/20

More Info

When it comes to understanding the chances of pregnancy and menstrual delays after protected sex, it's important to consider several factors. In your case, you mentioned that you had protected intercourse on October 6, and the condom did not break. You also took a pregnancy test on October 17, which came back negative, but your period, which was expected to start on October 15, has not yet arrived.
First, let's address the likelihood of pregnancy. Since you used a condom correctly and it did not break, the chances of pregnancy are significantly reduced. Condoms, when used properly, have an effectiveness rate of about 98% in preventing pregnancy. However, no contraceptive method is 100% effective, and there is still a small chance of pregnancy due to factors such as condom slippage or pre-ejaculatory fluid, which can contain sperm.
Given that you took a pregnancy test and it was negative, this further decreases the likelihood of pregnancy. Pregnancy tests are generally reliable when taken after a missed period, but they can sometimes yield false negatives, especially if taken too early. Since your expected period was on October 15 and you tested on October 17, it is possible that the test was taken too soon, but the fact that you had a negative result is reassuring.

Now, regarding your menstrual delay, there are several reasons why your period might be late. Stress is a common factor that can affect the menstrual cycle. If you are feeling anxious about the possibility of being pregnant, this stress can potentially delay your period. Other factors that can cause a delay include hormonal imbalances, changes in weight, exercise habits, or even illness.
If your period does not arrive within a week or so of the expected date, it would be advisable to take another pregnancy test to confirm whether or not you are pregnant. If the test is still negative and your period has not started, it may be a good idea to consult a healthcare provider. They can help determine if there are any underlying issues that need to be addressed.

In the meantime, it is generally recommended to wait for your period to arrive naturally. If you are experiencing significant discomfort or have other concerning symptoms, such as severe pain or unusual discharge, seeking medical advice sooner would be prudent.

In summary, based on the information provided, the chances of pregnancy appear low due to the use of a condom and the negative pregnancy test. However, if your period continues to be delayed, monitoring your symptoms and consulting with a healthcare professional is the best course of action. Remember that menstrual cycles can vary, and occasional delays can happen for a variety of reasons.

Similar Q&A

Understanding Pregnancy Chances After Unprotected Intercourse: A Doctor's Insight

Hello Doctor, my last menstrual period was on September 1, and my average cycle is 35 days (it has never exceeded 40 days). I had unprotected intercourse on October 6, and my period is now 13 days late. I took pregnancy tests on October 14 and October 19, both of which were negat...

Dr. Huang Jianzhong reply Obstetrics and Gynecology
The last menstrual period was on September 1, with an average cycle of 35 days (never exceeding 40 days). Intercourse occurred on October 6 without contraception, and the menstrual period has been delayed for 13 days. Pregnancy tests on October 14 and October 19 were both negativ...

Understanding Pregnancy Chances After Protected Intercourse: A Guide

Hello, I had sexual intercourse on April 22 and 23 (with condom use and withdrawal method), totaling 5 times over the two days. I am certain that the condoms did not break and that withdrawal was successful. My period was expected around April 30, but it did not arrive. On May 1,...

Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the chances of pregnancy should be low. After finishing the menstrual induction medication, your period should come about four days later. Just monitor the situation and don't worry. Wishing you good health.

Understanding Pregnancy Chances After Unprotected Intercourse

Hello doctor, my girlfriend had her period starting on December 14, lasting for 7 days with a 28-day cycle. We had unprotected intercourse with ejaculation outside on the morning of December 17. She hasn't had her period for a week now and is feeling anxious and experiencing...

Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the chances of pregnancy are low. It is recommended to use contraception during sexual intercourse. Wishing you good health.

Understanding Pregnancy Chances After Unprotected Intercourse

The menstrual period was from March 1 to March 5. There was unprotected intercourse on March 9, March 11, and March 14. I would like to know the likelihood of pregnancy. The cycle is approximately 27-29 days long.

Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, it is advisable to take preventive measures before engaging in sexual activity. If your period is more than a week late, you may want to consider seeing a gynecologist. Wishing you good health.