How far along were you two weeks ago? I've had it happen but it was the other way around. LOL I was around 20 weeks with the first u/s & 41+ weeks with the second. I'd go with what the doc at the level 2 u/s said just because they do a whole lot more u/s than anyone else. Did he point her girl parts out to you? Was it clear to you it's a girl? How about the last u/s?
Shannon
Shannon