Chronic Inflamed tonsils and pharynx.

Hi Sir/Mam, It all started when I drank too much of coke in the cricket stadium 2years back. I thought it was simple throat infection or due to the shouting. I took a course of amoxiclav. The throat pain reduced . Then I had 2 glasses of coke again 2 weeks later and again I got the same infection. Again took a course of amox. The pain has reduced but the redness is still persistent. There are no symptoms now but the tonsils and the throat appear inflamed. From past two years I have avoided soft drinks and if I had even one glass , there is throat infection again the next morning. I have no pain but inflamed throat. I think I have halitosis because of it. Recently I once felt a small grain of food stuck in my tonsils and it touches the pillar everyone I swallow. I always drink cold water. What do you suggest? Any different medication or removal of tonsils? What about the pharyngeal inflammation?