My son and his girlfriend went today for another sonogram (the 4th one) and today they were able to tell it was a GIRL! I was with them and it was an overwhelming feeling watching the heart beat knowing this was my grandchild. They haven't been able to tell previously what sex she was because she had her legs crossed. I guess she was waiting to show me. :-) They still couldn't see her arteries going into her heart so Amy will have to get a more specialized sonogram done but the doctor said it was nothing to worry about. They are obviously working since her heart is beating (another awesome experience!) We have some 4d pics that they took today too. AWESOME!