2 techs say its a girl - what do you think??!!?

I think this is a shot of her back w/ her feet in front of her. Like she is laying cuddled up on her belly on the floor. Do you think its a girl? If it was a boy - wouldnt you see at least something even in this position?? My first child was a boy and you could really tell! Ive been trying to post the pic but for some reason I cant get it changed from a pdf to a jpg. I can email it to anyone interested in helping... thx!!