warm but no fever?

Jamie

my baby is very hot to the touch and seems to be uncomfortable. I'll attach pictures. his rectal temp is 98.2 and he's three months old tomorrow. his skin looks like miliaria, which he has had before, but now it seems to be getting worse. I tried to put lotion on it and he screamed his head off. idk what to do, I'm getting married in less than 24 hours 😔