Thanks for writing your query.
It seems that you are having infection of the upper respiratory tract
You should get a throat swab culture done. This will help to know the causative organism and the appropiate antibiotic for the infection.
You can continue taking dolo 650 which contains paracetamol
for fever and mild pain. Antihistamine like fenofexadine
120 mg along with decongestant like phenylepherine will help in relieving your symptoms of throat congestion
. Warm saline gargles will also be helpful. Take any medicines after getting yourself examined by an ENT specialist
You can continue taking your medicines for diabetes and thyroid.
I hope this is helpful to you.