when my ob did a scan of my 2nd bubba, measuring all the head measurements - some were out by at least a week or so from my dates. some were showing a week behind, some a week ahead but the total circumference was normal. i was really worried too but everything was fine. i cant really help on the other questions but i hope the next scan is much less stressful for you. im sure everything will be a ok!

3 boys! how exciting. i have two boys and we have a third baby on the way. im sure its another boy.

best wishes

beccas