Sudden drop in fetal growth rate.

Let me start by saying I have Big babies. This is my third pregnancy. I have always measured 1-2 weeks ahead.

At my 20 week scan baby was measuring 7-8 days ahead. Looked great. Went back for a 25 week scan and baby is now measuring slightly smaller. The problem is he has had over a 30 point drop in his growth rate. He is still within normal limits but I’m kind of freaking out.

Everything else has checked out fine. Doppler’s are fine. Cord. Fine. Etc just he has suddenly slowed on growing.

Anyone else have this problem and baby was ok? I go back in a few weeks to check growth again but now I’m freaking out and scared.