Do not get depressed .
If you have taken antibiotics many times and again and again you are having same problem it could be that you have an antibioma formation .
This antibioma gets formed when there is infection and pus which is collected in a region and when there is improper or inadequate use of antibiotics.
You must get an ENT consultation done and get an CT scan
neck if required and Blood tests to know about infection.
Your examining doctor can suggest you better.
Get well soon.