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in Pregnancy Period General by anonymous
I recently had a Transvaginal ultrasound and discovered that I am pregnant with fraternal twins. However, I am unsure about who the father is. I had sex with guy 2 on March 25th, but the gestational age (GA) and average ultrasound age (AUA) measurements for Baby A and Baby B indicate that conception likely occurred on March 16th and March 18th respectively. My last menstrual period (LMP) started on the 18th though, and I also slept with guy 1 on March 4th and March 18th. Based on this information, who is more likely to be the father - guy 1 or guy 2?
Artificial Intelligence Health Assistant's Answer

Determining paternity can be challenging when multiple partners are involved during a woman's fertile window. In your case, based on the gestational age measurements from your Transvaginal ultrasound, it appears that conception for Baby A most likely occurred around March 16th, while conception for Baby B likely took place around March 18th. Considering these dates, it is possible that both guys could be potential fathers.

However, it's important to note that ultrasounds have a margin of error of a few days, so there is still some uncertainty in pinpointing exact conception dates. Additionally, sperm can survive inside the female reproductive system for up to five days after intercourse.

To get a more accurate determination of paternity, you may consider pursuing DNA testing once the babies are born. This will provide conclusive evidence regarding their biological father.

It's also worth mentioning that open communication with both guys involved is crucial during this time. Discussing your situation honestly with them can help establish trust and facilitate any necessary future decisions regarding parental responsibilities.

Remember to consult with a healthcare professional or genetic counselor for personalized advice tailored to your specific circumstances.

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Best way to tell is a paternity test. If you know when you ovulated that would narrow it down but with such a small window between the 2 it is nearly impossible to tell. Sperm can live for up to 5 days so either is possible. 

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