Welcome in H.C.M. for your medical query.
Looking after all about your query it appears as you are having acute tonsillitis
, this is a disease giving you severe pain
in throat during swallowing food or even your own saliva.
For confirmation of throat infection
and treatment point of view you should do-
1- Culture and sensitivity of throat swab.
2- Sputum for Gram's stain test.
3- Blood - CBC, ESR
, blood sugar (F & PP).
Till the investigations are going on and reports are awaited you may take-
a- Tab Paracetamol
b- Warm saline gargling.
c- Adequate liquid orally.
d- Antibiotic - though suitable antibiotic may be decided according to culture and sensitivity report but at present you may take any broad spectrum antibiotic having anaerobic coverage as well.
I hope your query is answered