I suddenly got a headache 1 yr. ago, w/ dizziness, & ear fullness. everything went away except ear fullness. i hear a loud thump upon bending or straining. no midde ear fluid seen. no tmj. no allergy?

Inner ear problem. : Sounds most like minierres disease or a variation on that. This involves the inner ear and there is increased pressure which affects hearing a sense of fullness you can get a headache and vertigo. It will look normal. It should be checked out by an ENT specialist. Often diuretics can help.

Best guess: Sounds like you are having intermittent eustachian tube obstruction. Try a decongestant or a decongestant nasal spray on that side.

See an ENT: I would recommend seeing an ENT dr. Whom can hopefully determine your the source of your issues. If in doubt, get more than one opinion.