Abdominal Pain: Pregnancy Timing and Ovulation Insights - Obstetrics and Gynecology

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Abdominal pain


I would like to ask, my last menstrual period was from February 7 to 12.
According to the app, my ovulation days were from February 16 to 25.
Therefore, I had intercourse with my boyfriend on February 24-25 and did not wash afterward, going to sleep immediately.
On February 27, I had intercourse with someone else and did wash immediately afterward.
When I tested on March 5, there were no two lines, but I tested again on March 12 and saw two lines.
Did I conceive on February 24-25 or on February 27?

Xiao Li, 20~29 year old female. Ask Date: 2021/03/24

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, the timing is too close; anything is possible.
Wishing you good health.

Reply Date: 2021/03/24

More Info


Understanding abdominal pain during pregnancy can be complex, especially when considering the timing of ovulation and conception. Based on your menstrual cycle, which started on February 7 and lasted until February 12, your estimated ovulation period would typically occur around February 16 to 25. This is based on a standard 28-day cycle, where ovulation usually occurs approximately 14 days after the first day of your last menstrual period.

Given that you had unprotected intercourse on February 24-25 and again on February 27, it is possible that conception could have occurred from either of these encounters. Sperm can live inside the female reproductive tract for up to five days, which means that sperm from the February 24-25 encounter could still be viable when ovulation occurs. Therefore, if you ovulated on February 25, it is plausible that you could have conceived from that encounter. However, if you ovulated later, around February 27, then the second encounter could have resulted in conception.

The positive pregnancy test on March 12 indicates that you are indeed pregnant. The timing of the test is crucial; home pregnancy tests detect the hormone hCG, which is produced after a fertilized egg implants into the uterine lining. This typically occurs about 6-10 days after ovulation, meaning that if you ovulated around February 25, implantation could have occurred by early March, leading to detectable levels of hCG by March 12.

Regarding abdominal pain during pregnancy, it is essential to differentiate between normal discomfort and pain that may indicate a problem. Many women experience abdominal pain due to the stretching of ligaments as the uterus expands, especially during the first and second trimesters. This type of pain is usually mild and can be managed with rest and gentle movements. However, if the pain is severe, persistent, or accompanied by other symptoms such as bleeding, fever, or changes in bowel habits, it is crucial to seek medical attention.

In your case, if you are experiencing abdominal pain, it is advisable to consult with your healthcare provider to rule out any potential complications. They may perform an ultrasound or other diagnostic tests to ensure that everything is progressing normally with your pregnancy.
Additionally, it is important to maintain a healthy lifestyle during pregnancy, including a balanced diet, regular prenatal care, and staying hydrated. If you have concerns about your symptoms or the timing of your conception, discussing these with your obstetrician can provide clarity and reassurance.

In summary, while the timing of ovulation and conception can be complex, your positive pregnancy test indicates that you are pregnant. If you experience abdominal pain, it is essential to monitor the severity and duration of the pain and consult with your healthcare provider for appropriate guidance and care.

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