@rocknrobbn Oh my, your story could be mine! An ENT is just the doc to see - they need to see what is going on in your sinuses.
Beyond that,
Ask for the mucus from your sinuses to be cultured, to be sure the medication is being used, and for a long enough time (some bacteria are very hard to kill off.)
Ask about medication to thin the mucus in your sinuses and help it drain. That can get rid of the place for bacteria to grow.
Ask about eustachian tube dysfunction - it can cause all of the symptoms you describe (I had tubes in my ears in my 30's and 40's to relieve the pressure.) Now I find heat and gentle massage can help the pain & pressure.

Have you seen an ENT for these conditions before?
Sue