Namesaredifficult

Seeking some reassurance that I haven't just messed up my HT at day 18 post op. Today I wore a hat for a few hours and after removing it, noticed two dents in my scalp where the scalp had been compressed and they are still there but improving slightly one hour later. The compression was in the transplanted area. I'm getting some minor dull ache/warm sensation in these areas of compression. Could this have caused damage to the grafts or am I over thinking it?