Hi and welcome,
Your are suffering from acute pharyngitis
which is inflammation of the mucous membrane
lining the throat. Swelling of glands show you may have tonsillitis or lymph node enlargement . It is usually bacterial infection or sometimes viral related to flu or cold.
Pharyngitis shows symptoms of swelling and pain in throat, difficulty in swallowing, fever , weakness in legs .
As you said you did not respond to medicines , i suggest you to start with antibiotic Augmentin 625 mg along with aceclofenac serratiopeptidase
2 times daily for 3 to 5 days. it works well against bacterial infection.
Mouth gargling with antiseptic mouth wash chlorhexidine
gives soothing effect to throat and promotes healing. drink lot of water and keep yourself hydrated .
i hope this helps you, take care.