I have had similar symptoms and am sad to say I'm now in month 5.Been to two ENT specialists and had a head and neck MRI,all showing no problems.Although no hearing loss,I have constant crackling in predominantly my right ear,symptoms of eustacian tube dysfunction,and migrane like headaches,again predominantly right side.I am currently trying acupuncture (suprisingly on my docs advise) and will let you know the outcome.No medic has any answers at the mo and I'm sure a couple actually seemed to think I'd suddenly developed hypochondria!!! I've talked to a couple of people who have similar conditions,although usually accompanied by vertigo/dizzyness/hearing loss etc.I'm really hoping for some answers and will post them on here if so.Good luck and I hope it's not as prolonged as my situation,cheers!