it is the infected sharp tooth which is causing the problem.
Tonsils enlarge if there is any infection in surrounding tissue or teeth.
You tongue also might be having small ulcers which need to be treated as early as possible.
consult and get the tooth removed it is not of much use and is creating trouble.
Tab. Mucinac 600 once daily
+Domperidom two times a day half an hour before meals
gel 2 tsf two times a day half an hour before meals
gargle 2 tsf in half glass of water for gargle 3 times a day
Avoid alcohol, Smoking