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Paternity Testing: Determining Your Baby's Father - A Comprehensive Guide


Question
The first day of my last period was August 23, 2008. I had unprotected with John on September 4. Then I had protected sex with Jack on Sept. 13. However, when Jack came w/the condom on, the condom stayed inside of me. He took it out w/all his come but you just never know. So, i was wondering if you could help me determine who my baby's father is. My doctor says it's John and going by the sonogram, it's also john. I guess what i really want to know is if there's a possibility that Jack may be the father. Thanks in advance for your help.

Answer
Sorry for the delay in getting back to you.

A first trimester sonogram should give you fairly accurate information concerning your date of conception.

If you ovulated between Sept 3 and 9, then John is the father.  In order for Jack to be the father you would have to have ovulated between Sept 12 and Sept 18.

The most likely date for ovulation was probably Sept 6-7.  If a sonogram confirmed this, I think you can be confident that John is the father.