A gestational age of 11 weeks does not necessarily mean that exactly 11 weeks ago she got pregnant. the weeks are according to her last period. most women ovulate 2 weeks after their period so if she was 11 weeks at april 16, then she most likely conceived 9 weeks ago, which would be around feb 13. she could have ovulated anytime around a week before or after though. its a tricky situation, but if you are unsure ask for a paternity test. this will solve that question
