Both were right with my DDs. We even had the sonographer tell us correctly what she thought was developing at 12 wks because they were doing an early determination study. Apparently they find things pointing up for a girl and down for a boy most of the time.

I'm blown away that it can be that detailed! I have never personally known anyone for whom the scan was wrong. I would question the skill of the technician or the quality of the equipment if they were wrong after the baby is fully developed and I'd be more worried about what else they might have missed too.