Is Pregnancy Possible After Intercourse? Your Cycle - Obstetrics and Gynecology

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Is there still a possibility of pregnancy?


Your girlfriend's last menstrual period started on June 7.
There was digital penetration and external ejaculation on June 23.
Pregnancy tests taken on July 1, July 9, and July 11 all showed one line (negative).
However, her period for July has not yet arrived.
Should we continue to take pregnancy tests, or is it likely just a delayed period? What is the probability of pregnancy in this situation?

1234 Han, 20~29 year old female. Ask Date: 2018/07/12

Dr. Huang Yiwen reply Obstetrics and Gynecology


Hello 1234 Han: If your girlfriend has a regular menstrual cycle but her period is late this month and the urine test shows only one line, then the likelihood of pregnancy is very low.
I suggest waiting another week to see if her period arrives.
If it still doesn't come, you can take another urine test.
If it still shows negative, then consider taking medication to induce menstruation.

Reply Date: 2018/07/12

More Info


When it comes to understanding the possibility of pregnancy after intercourse, it's essential to consider several factors, including the timing of ovulation, the menstrual cycle, and the nature of the sexual activity. In your case, your last menstrual period started on June 7, and you had sexual activity on June 23, which is crucial for determining the likelihood of pregnancy.

Typically, a woman's menstrual cycle can vary in length, but the average cycle is about 28 days. Ovulation usually occurs around 14 days before the start of the next menstrual period. If your cycle is regular, ovulation would likely occur around June 21, which is close to the date of your sexual activity. This timing suggests that there is a possibility of pregnancy since sperm can survive in the female reproductive tract for up to five days, allowing for fertilization if ovulation occurs shortly after intercourse.

You mentioned that you have taken pregnancy tests on July 1, July 9, and July 11, all of which showed a negative result. It is important to note that home pregnancy tests are most accurate when taken after a missed period. Since you have not yet received your period for July, it is advisable to wait a few more days and take another test, especially if your menstrual cycle is typically regular. If your period does not arrive within a week or so, you should definitely consider taking another pregnancy test or consulting with a healthcare provider for further evaluation.

There are several reasons why your period might be delayed, including stress, hormonal imbalances, changes in weight, or other health issues. If you have been experiencing any significant stress or changes in your lifestyle, these factors could contribute to a delayed menstrual cycle.
If you continue to receive negative pregnancy tests but still do not get your period, it may be worth visiting a healthcare provider. They can perform a blood test to check for pregnancy, which is more sensitive than home urine tests, and can also evaluate other potential causes for your missed period.

In summary, while there is a possibility of pregnancy given the timing of your sexual activity, the negative pregnancy tests suggest that you may not be pregnant. However, since your period is late, it is wise to continue monitoring the situation. If your period does not arrive soon, consider taking another test or consulting with a healthcare professional for further guidance.

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