Suggest Remedies For Recurring Sinus Infection With Ringing Ears And Dry Throat

I had recent ear infection/ sinus infection with 2 rounds of augmentine, steroids , nose and ear sprays and drops. It seems to have returned. My ears are ringing, sneezing and slight cough like a dry throat. They suggested tubes of it returned because eustation tubes are full. I have a follow up appointment in a few weeks but it has come back. My co-workers have had strep throat but I tested negative. For flu also. What to do. It ha been this way for eight weeks now and only returned after a day outSide in cold weather at football game.