I know when you have a piercing infection you have to keep the ring on and clean it more and press it with hot water , but what if its not a infection but it's a allergic reaction to the jewellery what are you supposed to do ?

I don't know cause I've never experienced such a thing but my advice would be to go and ask to the one that have had it done and to ask him

Go back to where you got your piercing done.

I had an allergic reaction to the metal used when I got my belly button pierced. I changed the Jewellry to a different metal and it went down in two days and was fine. Ive had my piercing for 6 years now.