I have too many symptoms that add to nothing/something---hel

I have occaisonal dizziness, buzzing in head, frontal headaches that come more often and last longer, slight lack of concentration, nausea when headache, ears full, feel moderately depressed, but functioning. Less concentration, more staring. Most worrisome are unexplained "drops" where I'll fall on the floor, dizzy, vertigo, that lasts less than 30 minutes. One time I "whited out" where time stood still, voices got further away and I lost all strength and fell to the floor--not dizzy or nauseaus though that time. Recovered quickly.
Am not pregnant!
Please help--most male doctors think I'm a hypocondriac. I've been diagnosed with Eustacian Tube Dysfunction, but now my symptoms seem to go out of the boundary of that diagnosis.
HELP me, please