Just wondering if anyone can shed some light on my current situation.

According to Fertility Friend and my own calculations, I am 15 weeks pregnant with an EDD of 21 April 2010.

However, I saw my doctor who has said after a dating scan at 8 weeks that I am 13 weeks pregnant with an EDD of 27 April 2010.

I?m a bit puzzled. I understand that she is saying I am 13 weeks pregnant going by the gestational age of the baby, but I thought doctors went by the LMP date because different babies grow at different rates (within reason)? Also, how can there be a two week discrepancy between how far along I am, yet only 1 week?s difference between my EDD?

Not that it really matters per se, but I am confused at to whether I should count myself 13 or 15 weeks? I am dying to find out the baby?s sex and want to know how long I have to wait LOL.

Thanks so much for any comments!