Haha! We had a super hard time finding out the sex of baby boy. Everytime we went his legs were crossed so tightly together that it was nearly impossible to see anything, and that was further complicated by his cord being between his legs. Were told, though, that he's a boy most likely because the cord was between the legs and it still looked like a boy! Doc said a lot of times when the cord is between the legs it makes the three-fold girl appearance, so about once a month he'll surprise people and tell them it's actually a boy!
All my wives tales said girl, I'm carrying high (high enough to be kicked in the boob--that's pleasant). The only thing that said boy was the chinese calendar! I can't say I'd be too surprised, even now and with everything done for his nursery and everything, if he actually ends up being a girl lol! We are going for a 3D ultrasound next month so I'll have them make absolutely sure at this one!!