how can you tell if you have a blocked eustachian tube?
['a plugged feeling in the ears.', 'ears feeling like they are filled with water.', 'tinnitus, or ringing in the ear.', 'muffled hearing or partial hearing loss.', 'ticking or popping sounds.', 'pain and tenderness around the ear.', 'a tickling or tingling sensation.', 'trouble with balance.']