For the past few weeks, I get very dizzy if I go from an upright to prone position, or from a prone position to an upright piosition.  It may be related to the fact that I flew a few weeks ago and my ears became extremely blocked up for about 12 hours after landing.  I do suffer from allergies and have frequent nasal and sinus congestion.  Do you think this is something I need to have checked out?  Im a 60 year old woman in generally good health.
Hi, Welcome to Chat Doctor forum.  You have diagnosed exactly to the point. You had some allergy, to something in the plain, or due to the barometric changes there you had sinusitis, and some infection in the ears, which spread to the internal ear, and caused the damage to the cochlea.  I advise you to consult an E.N.T. surgeon for diagnosis and treatment.  Take more of green leafy vegetables, pulses, sprouts, and protein rich foods to hasten the recovery.  Wishing for a quick and complete recovery. Thank you.