Help! Almost 5 month baby rash?

Izabelle

My brother texted me yesterday while I was at

work and he said my LO had some rashes. He

didn't explain to me that they were almost all over

his body. When I saw them last night, they were

much more red. I grabbed a clean wash cloth and

wiped him down (gently) and put him some

hydrocortisone that his doctor prescribed for a

prior occasion (his nipple was acting up a bit). I'm

planning to call his doctor tomorrow but is this

something to freak out about or?