+ M spike and pain

To Dr. Garth Nicholoson.

left sided misery
by desparatetoknow, 3 hours ago
Tags: neuropathy, left, Pain  
I continue to have this achy left sided pain,  present when siting but worse when lying down on my left side.  The only tine it doesn't hurt is when I'm walking.  My MRI showed cervical, thoracic and lumbar disc bulging but no nerve impengement. The  MRA was negative. Along with this pain is also severe peripheral neuropathy.  I've tried Neurotin but it doesn't help.  I have had all kinds of test including sleep study which is negative. Now I have been told that I have a positive "M" spike protien  positive light chain lambda?  Is  the "M" spike alone specific for Multiple Myeloma. Could this be a cause of the pain and if so does Melatonin help?
for any light you can shed on this.