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Paternity Uncertainty: Estimating Paternity After Unprotected Sex - Advice & Information


Question


i got pregnant and im not sure who the father of my baby is, my baby is 4 months old and doesnt look like me or any of the 2 guys i slept with, he actually looks alot like my mom and my brother, but anyway- see, my last period started on july 23rd (2007) and ended on the 27th, i had unprotected sex on august 9th with one guy and with another on the 23rd--- help me figure out who is most probable to be the daddy of my baby!!!
thanks alot!!


Answer
Dear Anna,

The only way to know for sure which partner is the biologic father is to do a paternity test.  You can request this from you doctor or local health department.  

Based on your period, and assuming you have regular cycles, you would have ovulated between the 5th and 9th, and that would have been the time that you got pregnant.  The 23rd would have been at the end of your cycle, just before your period, so that guy is out.

Sincerely,

Edward J. Ramirez, M.D.
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
www.montereybayivf.com

Monterey, California, U.S.A