Hi , u can try this if it's not severe burn.. do salt water gargling..Add teaspoon of salt to a glass of warm water, swish it around in your mouth gently and then spit it out. Salt is a natural antiseptic that can reduce swelling and pain, ultimately relieving your burn symptoms.. n it will heal within 2 weeks if nt severe don't worry

Yes its completely normal,apply clinora gel/ dologel CT over the affected area.