Don't believe anything before you see it with your own eyes. I checked with the company before purchasing the kid if there is any chance that there are still y-chromosomes in my blood from my previous boy pregnancies. They said no......of course. Later, I found an article stating that it is scientifically proven that y-chromosomes can stay in a mother's body up to 20 years (I think it was 20) after she'd given birth. I posted this article somewhere here. Did you read it? Let me see if I can find it. Anyways, chances are good that you and/or I are expecting another boy, but TMPOB's results don't prove anything.