Hard slightly raised area above baby’s right ear

Heather

My baby has a hard ever so slightly raised area above his right ear, no redness or anything it’s just slightly raised and not noticeable unless you run your finger over it. It could just be his head, I may just be paranoid. Anyone ever have this happen with their baby? It’s not bothering him. It’s not a bump or lump, it just feels different than the other side.