baby gender expected

assalamualaikum mommies.. normally on when we can see the baby gender? because last on 23 weeks going to 24 weeks I was scan my baby at private & the doctor sais it's a girl.. she told us that she didn't see any 'small gun/round egg' to expect it's a boy.. huhuhu.. I & Hubby really excited if she is a girl.. please pray for us ?