Pregnancy starts on the first day of your last period. It seems weird to me, but that's how doctors count it because there isn't a definite way of telling what day you ovulated or the baby was conceived.
your technically 2 weeks pregnant when you take the pregnancy test, they measure from your last period, which adds on 2 weeks to the babys gestational age. look it up online, they have alot of good information to know, and its really interesting!!
Thx because I'm totally lost I took a pregnancy test Nov 7 &; I want pregnant then when I went back Nov 26 I Was.... THX for advice