Welcome in H.C.M.
I have gone through your query regarding throat pain due to sore throat
that had became worse and now giving problem in swallowing and infection had reached to involve ear as well. In the meantime your last tooth is also became tender.
Considering all your symptoms it appears basically you are having throat infection
which had worsen to develop tonsillitis
and had reached to ear via eustachian tube.
For confirmation of infection and treatment point of view you should do-
1- Culture and sensitivity of throat swab.
2- X-Ray paranasal sinuses
3- Blood- CBC,ESR
, blood sugar (F & PP), serum creatinin.
All these above investigation along with findings of clinical examination will disclose the facts for making diagnosis and that may be manage accordingly.