This might be too much info, sorry if it is but I used to be a bit like that as well. Turns out I was nervous and further tests revealed a significant thyroid problem that had gone undiagnosed for decades. I take synthroid for life now and reduced my stress, blood pressure etc. Its like I'm on a cloud now the last 7yrs compared to how I used to be.
I did grind my teeth. But that stopped with the meds.
One other thing for you or anybody older reading. We just bought a spine inversion table couple months ago as I have Sciatica and compressed discs. People for years had been recommending this. Oh man, its so damned great. Just 5-10mins on this a couple times a day and its like life changing stuff. One thing people didn't mention is I'm sleeping like a baby since using this. No more nerve pain. Its like a miracle cure.
This is the one we bought.
www.canadiantire.ca
proviso though that anybody should consult with doctor if high blood pressure or family history of strokes or such. But they say to get used to it gradually. If you tilt too much too quick its a weird feeling. What a great product though. We got it on sale as well.