I am having bouts of severe, debilitating dizziness, pain in one ear, post nasal drip and sinus pressure/pain. I have seen several doctors, and an ENT. All have indicated ears were clear, diagnosis have ranged from allergies, pre-menopause, vertigo, bacterial sinusitis. I am currently on antibiotics, with no relief. What is going on? Have had issue for 4 months, everyday with varying severity.