13 years worth of symptoms and MRI's (14 Brain in total, 1 spine) "no significant lesions" (had 2 tiny lesions show up after 10 years that were written off), first 2 LP's negative.
Big relapse in 09 and brain MRI now had 8 lesions and LP positive (plus a lesion in my spine) Got diagnosed finally.
My aunt had MS so I was 99% sure I had MS.
You are not a nut job, don't let the dr make you feel that way. You know your body better than anyone and if everything else has been ruled out stick to your guns.
Check Magnesium, B12, Lyme, lupus anticoagulant antibodies (mine are now abnormal).
Blood test that showed something was up were:
CRP levels, antibodies high (IgG, IgA, IgM), TPO (thyroid antibodies) sometimes ESR would raise too. (these are not related to MS directly but they showed my body was not right)