A member asked:

Lmp may 5th 2014 dtd w guy a may 11th guy b 15th doc i ovulated anywhere from 15th thru 20th..first sono was july 1st i measured 8wk n3day edd 2/8/15?

A doctor has provided 1 answer

90% guy B: Seems like the sono is off by a week, but if your normal regular menstrual period started on May 5, then there is a 90% chance guy A sperm wasn't around by the time you ovulated. There is a 10% chance that you ovulated extra early and that the ultrasound is right and guy A is the other parent.

Answered 2/3/2017

3.3k views

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