Thanks for your question.
Symptoms of your's suggest Upper Respiratory Tract
I will to ask you certain questions:
Since when are these present from?
Are the symptoms associated with Chest pain
,Difficulty in Breathing,Body ache
Well as you already have been on antibiotics and even on taking its full course the symptoms have not subsided.So,it can be either due to Viral cause or due to bacteria resistant to the antibiotic you have taken.
So i will suggest you to have certain investigations done:
Complete Blood count
Throat swab culture and sensitivity.
Start taking antibiotics after the throat culture
report has come.
Maintain proper hygienic of oral cavity.
Warm saline or Chlorhexidine
gargle will be very effective.
Use Anti-Pyretics to relieve fever.
Even if the symptoms doesn't subside consult an ENT surgeon.
Wish you a fast recovery and a healthy life.