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Ask Dr. Norm S. Your Own Question
Dr. Norm S.
Dr. Norm S., Board Certified OB/GYN
Category: OB GYN
Satisfied Customers: 11252
Experience:  Over 30 years of experience in OB/GYN practice, including teaching students. Fellow of American Board of Obstetrics and Gynecology.
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My question is who is the father: sex on march 7, 11, 18,

Customer Question

My question is who is the father: sex on march 7, 11, 18, 2015 guy a and march28,2015 guy b ultrasound done on apr 6 2015 showing 6 weeks 1 day, due date based on this November 29, also had 2 more ultrasounds may 7 10w 4d and may 18 12w 1 d confirming my due date. Needs to know for sure, thank you and hcg on april 6 was 14125, lmp not sure exactly but somewhere last week of february
Submitted: 2 years ago.
Category: OB GYN
Customer: replied 2 years ago.
also heartbeat detected on april 6 100bpm
Expert:  Dr. Norm S. replied 2 years ago.

The ultrasound done on April 6 should be accurate within about 5 days. Since it showed you to be 6 weeks 1 day, that means that conception was March 8, plus/minus 5 days (March 3-13).

There is no possible way that your pregnancy is from sex on March 28, so therefore guy a is the father. Best wishes.