I am in the same boat Mel... Everthing is different this time around and I was convinced it was a boy. They say it is a girl. I do have to have a third tri scan though so I suppose we will see but DH is insisting the scan was right so I am trying not to get myhopes up it was wrong.... nothing to be done except wait - I have no idea how they did this for an entire pregnancy before scans we routinely available!! lol.