You need to find out your B12 numbers, ASAP. Low B12 leads to many many neuro symptoms in some people.

Spasms can be from withdrawal of the Valium... But it is long acting in most people. As it wears off in patients who use it every day or often, there are mini-withdrawals where the muscles and some nerves react.

Also spasms may respond to magnesium supplements.
I have a thread here:
http://neurotalk.psychcentral.com/thread1138.html

Starting at 1/2 the RDA using a good form may help.

The Vit D given by your doctor is not the best solution. Please read the link I gave you. If your doctor wants 50,000IU weekly, get OTC D3 (buy online). The RX D2 doesn't work well.

I would make sure you are getting enough zinc and Vit C daily.

Losing blood from the kidney is not normal and should be evaluated by a nephrologist.

Lidoderms only work when a specific target has been located.
Say a lumbar compression, or neck, or foot area. If used improperly they are useless.

There are other foods that can cause symptoms. An elimination diet would be a good idea, to screen one at a time for
Corn, soy, dairy, nightshade veggies (tomatoes peppers and potatoes), lily family (onion/garlic). Remove one family for 2-4 weeks, and then reintroduce it. You might find a serious culprit that way.

Avoid MSG in processed foods and restaurants. It can wreak havoc on the nerves.

Right now, you do not know 1) your serum numbers for B12, and whether the D is working or not (I suspect not).

Vaccines can cause all sorts of problems. Usually reactions to vaccines are treated with IVIG (which is expensive) because of the autoimmune nature of the reaction.

Figuring out things, requires homework. No way to get around that. This forum and the subforum attached to it has information you may find helpful. There are over 100 causes of PN... and you have to learn about each one critically to know how to approach it.

Alpha lipoic acid (or the newer r-lipoic) is discussed in the subforum above.