I hear ya. I have been having a stiff neck, low energy, sweating (all over), tailbone pain etc. I quit my job receiently. Few things I noticed being unemployed ( or part time, in my case); it is not all that healthy. I came to this site looking for answers on some health things that are not common place to me.
Just ideas..I am on the computer alot more, I sit more. Just to start off I just dont even walk as much in a general day as before. Watch movies/Telly here and there more often.etc So I dont get my body moving as much as I know I should.
P.S I am planning on looking into my teeth filings. P.S.S I have all of the symptoms that you listed. My sister had the lump it went away but not tottaly. Lets compare notes and findings. Jody
To add, when I tilt my head backwards when sitting down, there sounds like a light crunching/crackling sound.