Hello scaredtd, and welcome to NeuroTalk.
While your symptoms may be caused by a number of things, you might start by looking into B12; especially because it is relatively safe to take, and as you mentioned, frequent or multiple doctor visits are not on the table right now.
Here is a link to the thread on the subject:
Methylcobalamin: A Potential Breakthrough in Neurological Disease - NeuroTalk Support Groups
http://neurotalk.psychcentral.com/thread164157.html
Another supplement that many of us find helpful is Vitamin D.
Hope that one or the other helps.
With love, Erika