26 weeks 6 days

I've posted something like this in the past but at my anatomy scan baby was measuring a week behind.

I had another scan 2 weeks later at 22 weeks and 6 days and everything was fine but she was measuring at 20 weeks and 4 days I think. The high risk doctor just said shes small. He told us not to worry. However I looked at the results and my nipt is normal, and all her measurements are good to but shes small. Shes measuring in the second percentile. Like I said they said not to worry that she could be small or that I could deliver early. I havent had another growth scan because I moved out of state and have a doctors appointment next week. It's just a prenatal though. However has anyone else had this happen where baby was in a low percentile and either caught up or was fine regardless? I'm very confused as my scan at 12 weeks was normal and she was measuring perfect and now shes small. I'm just so worried.