Measuring small

Hi all.

I need some feedback from all mamas in the same situation. I’m 24 weeks now. My baby is measuring 1 week behind for most measurements except the tummy that is 3 weeks behind. Specialist is monitoring me every 3 weeks and she tells me it’s mostly just a smaller baby. We will see in the future. I was smaller as well but I’m still very worried. Do any of you have the same experience? I know the worst case but everything else seems fine. However I know not all genetic conditions are detectable with ultrasound so that’s why I worry mostly.