Welcome in H.C.M.
I have gone through your query regarding white green spots over both tonsils and the posterior part of tongue.You have intense pain on swallowing food and saliva.
By your clinical history and area of involvement it appears as most probably you are having acute follicular tonsillitis
. It can't be herpes
because your lesion is bilateral while herpes is mainly unilateral and herpitic blisters are usually along the course of nerve
For confirmation and treatment you should do-
1- Culture and sensitivity of throat swab.
2- Blood- CBC, ESR, blood sugar- (F & PP).
Till the reports of investigations are awaited you may take-
a- Tab Paracetamol
b- Warm saline gargling.
c- adequate liquid orally.
d- Antibiotic- it will be decided by culture and sensitivity report.
I hope this will help you.