Anyone had an SGA baby from 21 weeks?

I went in for my first morphology scan at 20 weeks and they noticed bub was small (10%) which is strange because myself and my hubby aren’t small people - so we were sent to a specialist to be monitored. Second growth scan appointment (21w4d) with the specialist and our little girl had fallen well below 5% in growth. I had bloods and an amniocentesis to detect the possibility of a genetic disorder with bub. I can’t help but freak out - as we are 23 weeks now and I love feeling her move and all I hope for, is her to be healthy and I just don’t know if she is going to be when we finally get our results! This waiting game is a killer!! Any SGA stories from you ladies would be amazing, good or bad! Xx (: