How soon can the best home pregnacy tests on the market detect pregnacy? Can they detect before a missed period?
Here's the scenario, a lady friend and I engaged in intercourse several times during the weekend of march 4 - 6. Exactly two weeks from the 6th she called me on march 20 saying that she took a home test and it's positive (pregnant result). So, the first question out of my mouth was, "what made you take a test? Did you miss your period?" she says, "no, I just felt like something was wrong. I've been pregnant before and I know what it feels like."
so, after having it confirmed by a doctor this past week monday, march 27, I learned that her last period occurred on feb 24. From my information, since she has a regular cycle, her ovulation date should have been around march 10 - 11. This means that any sperm that would have slipped by would have had to hang around inside of her from the 5/6 to the 10/11. That's 4/5 days. On top of that, although we were irresponsible and didn't use an protection, I still didn't release any sperm (ejaculate) inside of her unless there was some slip up along the way. And of course she's saying that it's only been me.
My question is, (1) if it is me she's pregnant by, could any home pregnacy test detect pregnacy that soon and before the next scheduled period was missed. (2) does it seem likely that she be pregnant by me?
Whomever is qualified to answer, please tell me your credentials. Thanks.