The proble you are describing is typical for sore throat
or phyringitis, but it is difficult to suggest you any treatment without doing examination and investigations.
Soar throat can be due to viral or bacterial infection and treatment for this two condition is totally different and it is only after making confirmation that what is causing this, treatment can be prescribed.
I would suggest to consult your doctor and have confiramtion and than will get treatment. In meantime continue with saline warm water gargle and have proper rest with proper diet and fluid intake.
Thanks and take care