I hope I'm not being presumptious here, but I think if you read lots of our prior posts, our symptoms and complaints run along the same vein, to differernt degrees.
I urge you to take a look at the 'stickies' at the top of this forum. There is a lot of information that should be 'stuck' at that top, so folks can get key info and learn about PN and it's issues. Start off with http://www.neuroexam.com/content.php?p=2 www/neuroexam.org
and then go to http://www.aafp.org/afp/980215ap/poncelet.html
The first will tell you what a neuro is generally looking for at first and the second will be a bit more specific. Those are the 'appetizers' so to speak. Being a neuro disease that mimics many things it's a hard issue to get docs often to zero in on. Looking at the sites above will give you a sort of 'intro to 101' version of what to expect. If you don't get some of the basics from a doc [usually a neurologist] if your medical insurance allows, get a second opinon. Do not overlook diabetes or pre-diabetes as a possibility. I hope others will speak more eloquently on this issue.
Lastly any tests you have...be SURE YOU get copies! Handy when seeing other docs and you can avoid having the same tests unnecessarily at times. Check out www/lizajane.org as well, there are worksheets put together by other PN'ers who have all varieties of PN issues...including spinal ones. It's kind of a menu of tests that could be done for diagnosis.
Sorry this is soo, well, heavy, but info is info...tho a lot. I hope this helps you decide what to do. And how to do it, and what to expect in the doing. - j