How Can I Relieve Pain In My Palatoglossal Arch And Mouth Redness After Taking Amoxycillin And Potassium Clavulanate?

Sir, i have pain in palatoglossal arch i turned red to the left and right of mouth and i also have pain in swallowing saliva or eating. What can i do and things i can eat and how much time it will take to get some relief. I had this problem for 3 days earlier i was feeling like fever also and it also generate headaches. I talked to a nurse she told it happened because of Amoxycillin and Potassium Clavulanate Tablets IP 625mg .