I treid to look at it, but couldn't get on, I think the whole address didn't paste on here. Anyway, how far along are you? I'm going to guess at least 4 months to 5 months since they know the sex already. Due dates are just an estimate and are give or take a few days. I would ask your Dr. By that far along they should know a little better than a month away, but we are all different. Anyway, congrats!
go to pregnancy.about.com and click on belly/ultrasound pictures it will be to the left of the screen and it has a whole lot of picturs. i hope it helps