Ok I notice I had a brown line going down my stomach that people say you get when your pregnant.But I still got my period every month.But i cant remember what month myperiodactually stopped I just know it was sometime at the end of last year. now that im actually pregnant the line got darker and of course longer from my growing stomach. I didnt start showing until aboutI say febuary. So I was just wonderingifits possible I could have been pregnant longer then what doctors are telling me? I had an ultrasound I measured at 26 weeks.and that I had concived in sept of 2011 but just didnt seem right. Everything sounds good normal even blood work came back good. But does anyone know how accurate drs are aboutwhenyou have concived? And does anyone knowthe most drs er ultrSounds are off by how much? NOW heres the strange part of this pregnancy my baby was born june of 2012 but he looks like this guy I had sex with only once may of 2010!?!? Why is this? Couldnt of been possible I was pregnant for months! Help thanks.