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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Can Paternity Of An Unborn Child Be Determined?

Hello, I took two positive urine pregnancy tests on April 21st and a positive blood test on April 24th. The first day of my last period was either March 27th or 28th. My boyfriend and I have been having regular unprotected sex and he has not been pulling out. However I had a one night stand on April 4th with another man. This man did pull out. My blood test showed that I am 3-5 weeks pregnant. What are the odds that my boyfriend is not the father?
Tue, 23 May 2017
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Infertility Specialist,  's  Response
Hi, I think if there was no contact of precum or ejaculate directly with the vagina in your one night stand, you can be sure that the contact didn't result in pregnancy. Also, it is less likely that you ovulated by that time because it was day 8 of your periods. But If you are not sure of that, you have to go for a DNA test for the final confirmation. Hope it helps.
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How Can Paternity Of An Unborn Child Be Determined?

Hi, I think if there was no contact of precum or ejaculate directly with the vagina in your one night stand, you can be sure that the contact didn t result in pregnancy. Also, it is less likely that you ovulated by that time because it was day 8 of your periods. But If you are not sure of that, you have to go for a DNA test for the final confirmation. Hope it helps.