29th percentile, anyone else? Or close to that?

Olive 🦋 • Wife, writer, stay at home mommy to Luna Violet and Kodiak Sage 🌑🐻
I'm worried about my little girl! Her belly measures two weeks behind, but today they said everything else measures great, but she's in the 29th percentile, and the average is 10-90 I think. Anyone else experiencing this? Also, her cord blood flow is 3.7 and they are worried since its inching towards a 4 and that's considered too high.