Growth scan at 38 weeks - measuring small

Marie
Has anyone had a ultrasound for this so late in the game? I have been consistently been measuring 2 weeks behind since 28 weeks. Had a scan at 30 weeks and baby was in 55th percentile. Doctor said it was to check size and fluid, but I forgot to ask "then what". I understand
They might induce if the baby was to big, but what about measuring small? 
I finally just stopped worrying about all of this too... ! 😔