Pain in the throat- base of tongue.

For the last about 40 days I have a severe pain while chewing just below the left ear and inside where the tongue ends. Pain starts from the base of the jaw and goes till the back of the left ear. I was prescribed Cefakind 500 by an ENT Doctor. I took it and the pain was temporarily reduced upto 70% but then it came back with full force after about 4 days. I was then prescribed Ciplox 500 for 5 days but the pain remains as it is. Kindly guide. Also there is mucous in the throat for the past about 4 months which refuses to go away. I was prescribed Bromhexin. I have been taking it for the past 15 days but the mucous is not going away. All my reports have come out to be normal- the Covid -19 was -ve, HTCT was nil/25, D- dimer was ok but I am still attaching herewith these reports.