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Am I the baby daddy?
Me and my girlfriend have been together for about 11 weeks now. She said she was pregnant so we went to the doctor and the dic said yes. We have been back to the doctor's office a few times now but i wasn't paying to much attention. But my girlfriend is 14 weeks pregnant but we haven't been sexually active for that long now. We have only been sexually active for almost 11 weeks now. So is there anyway that this baby is mine?
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134578 tn?1483549754
The number of so called weeks "pregnant" is misleading.

Pregnancy from conception to birth (full term) takes 38 weeks. But the pregnancy time period is counted at 40 weeks by the medical world, in order for doctors to be able to use the first day of the woman's last period (that she had before getting pregnant) to begin the count. This is because someone can easily see a period and remember when it was, but nobody can see see conception.

This is not to say a woman gets pregnant on the first day of her period, though. She needs to be ovulating, and that does not happen when she is having her period. Even the doctor would confirm this. If you said "Does saying she is 14 weeks along mean she got pregnant 14 weeks ago?" the doctor would say no, more like 12 weeks ago if she has ovulation on a regular schedule compared to the average woman.


If you have doubts that the dates are adding up correctly, get a calendar and figure out when you two first had sex. Do your best to remember. Then, do you have the due date of the baby? And was it based on ultrasound measurements of the baby? (Did your girlfriend have an ultrasound?)

If you have a reliable due date, meaning one based on the information from the ultrasound (baby's crown-to-rump measurement and other developmental markers) and not just on the doctor using a little cardboard wheel in the office, you can count back from that due date 266 days on a calendar. It would indicate an estimated conception date.

Did your girlfriend leave an old boyfriend to come to you? Does she say she didn't have sex with anyone else but you in that time period?

It's possible that the baby is from you, but you need more information about where the 14 weeks figure comes from. If it was merely counting from the first day of her last period, she could have ovulated somewhat late compared to average and you could be the dad. So that makes the ultrasound information really important.  If she has not had an ultrasound, it might not be easy to get an answer (unless you do a prenatal paternity test), since babies begin to grow faster or slower after a while, making ultrasound measurements less useful for trying to determine conception as the pregnancy goes along.

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