baby measuring a week behind

My baby is measuring a week behind and they are going to send us to a specialist to make sure there's no chromosome issues or placental issues, etc. I'm honestly not too worried about it since I'm 4'11 and my husband is 5'9...we are both small people lol. Has anyone else's baby measured a week or so behind and turned out to be just fine? I'm 24 weeks and 4 days currently.