Angell, I'm sorry that PT isn't affordable for you. You really need to be careful about that stepping on the back thing, though!

If you or your wife can manually check your back for any sore areas, then you might be able to do your own PT. If you get a long-handled electric massager, you can kneed out the areas that are sore. That's basically one thing PT does.

Strengthening any core/stomach muscles will help, too.

Juliejayne, Yes, the actual B12 # is very important. So many people are deficient in it. Don't accept that a number in the 300s to 600s is okay. All deficiencies begin at higher levels and go down from there!

Angell, I hope you can find some relief from your pain.

Annie