I can't believe they still haven't done anything.
A competent doctor would have you checked out thoroughly: mri, eeg, emg, blood test for immune responses and general checkup (glucose levels, thyroid hormone, cholesterol), basic neurological examination, etc. The idea will be to have all your symptoms looked at, especially the ones that couldn't possibly be psychogenic (e.G. Gluten allergy).
A less than competent doctor would send you to a psychiatric hospital and tell you it's all in your head, without performing extensive tests first to verify the lack of neuropathy, myopathy or immunopathy (i'm not inferring you're psychiatrically ill, just the possible consequences of ignorance or prejudice on the part of a doctor).
An incompetent doctor would do nothing.
If you have an incompetent doctor, change him/her. Tell your doctor you would like something done - that you are not satisfied with nothing being done. Remember it's your life and you have to take charge when noone else seems to be doing so for you (your doctor perhaps), because if the worst happens, it will be you that suffers. Give them hell if you have to and get yourself examined and given a reasonable diagnosis. Understanding the problem is fundamental to coping.
