I have all the symptoms you have mentioned, and have had M.r.i and Xrays the symptoms for me come with a problem called 'Degenerating Disc Disease' Docs call it a disease but it is not !!!! anyway hun i am very scared by the same symptoms as you, but Choirpractor tells me it comes with bones' and body not functioning the way they used too, and also 'Trapped Nerves" i have been told to drink at least 7 glasses of water a day so you can put fluid in you body to help balance it out, i have been having therapy for 4 weeks now and the pain in my head is less frequent than it has been in a very long time; and thats the bit that was scaring me the most. have you suggested going for an M.R.I to your doc. or having some x.rays done , sounds like a bunch of blood tests are not solving anything, strange as it may sound hun" but you may have a back/neck/spine problem that just needs adjusting and nerves are trapped and need to be realeased by therapy.check that out love. hope thats of some help
Good Luck Fairysue x