Welcome in H.C.M.
I have gone through your query regarding severe throat pain, aggravates on bending and your tonsillectomy
had already being done at your childhood.
Symptomatically it appears as you are having acute pharyngitis
involving para pharyngeal soft tissue
.To confirm it and to manage it you should do-
1- Culture and sensitivity of throat swab.
2- Blood- CBC, ESR, blood sugar (F & PP).
Till the reports are awaited you may take-
a- Tab Paracetamol
b- Warm saline gargling.
c- Adequate fluid orally.
d- Antibiotic (decided according to culture and sensitivity report of throat swab).
I hope this will help you.