Hello Glynis, well it seems after I read several of the posts this morning after waking up with jackhammers going off in my right ear at 4:00am, I have found the solution. In July of this year I installed a jaw extender, as a preventive device against sleep apnea. Seems, as I know, this pushed my jaw forward and it appears to put pressure around the jaw muscle and thus the ear. After I spent time joining this Forum, away from using the device, the jackhammers went away. So I connected the dots.
Zip-ardee-do-dah, Yippy-I-A. my-oh-my, its a wonderful day.
Cheers, Horricks,