I have severe neuropathy, I am gluten free, however...

Hi, I have neuropathy for over 20 years. I'm stage 3-4...constantly in burning pain. My question is, I have been gluten free for years. Someone told me Sourdough bread was something I could have. I tried it yesterday around 7 pm. Right now for the past 2 hours, I am having horrible stabbing pain. The pain not stopped by pain meds.

Has anyone had experience with Sourdough bread? Could it be the bread causing this awful episode. If this goes on for much longer I don't know what to do. It is extremely painful.

What can I do for stabbing nerve pain?

After I ate the bread yesterday, I was afraid and I took 3 charcoal capsules to treat the bread like poison. Which I think it is.