I am 30 yr old male, average smoking, drinking from 4 years Recently feeling dryness in throat, swelling tonsils at left, bt no pain at all, no white spots or red spots. Little difficulties during swallowing, no dry cough as well. I frightened if it is cancer or tonsillitis. All other functions are normal. No bleeding in cough, no ear ache , no weight loss. Instead gained wait abnormal in last 3 months Plz help me if it some serious thing or just viral. Also how to cure it.