Yeah I heard about the lower heart beat its a boy and higher its a girl too. I also heard about if you have craveings for sweet stuff its a girl but if you have salty craveings its a boy
I heard If your having a girl You crave sweet things like fruit witch was true for me :) or if your carrying high its a girl and if your carrying low its a boy witch is true for me as well. But I know many woman its not true for :)
I know they say if baby has a lower heart rate it's a boy.