DucatiPro,
do you feel lightheaded or dizzy? What medications are you currently taking?
I have never passed out, but I have certainly felt weak and groggy. Did you tell the ENT you passed out, and heard a ringing in your ear? It sounds to me like a viral inner-ear infection, perhaps combined with allergies.
Try irrigating, either using the methods posted here, or getting yourself an irrigation machine (costs about $150). Also, get some antihistamine. I'm taking Zyrtec, and so far I have noticed an improvement (although I'm still a bit lightheaded).