I had my 19 week ultrasound this morning and baby wouldn't cooperate. Slept the entire 45 minutes, butt in the air, hands on its face. The tech said it's probably girl, but don't paint a room or buy a wardrobe until we come back in three weeks.  Has this happened to anyone else?? I would love to have a girl but don't want to get my hopes set on having one if it isn't.