I’m so sorry you are dealing with this. I had a reaction to my first Pfizer vaccine, burning hands, feet and legs to above my knees. So bad that I couldn’t bring myself to get the second shot. It has now been 10 weeks and in the last week my pain has started to lessen and I am hopeful it will continue to. I hope yours does too. I take gabapentin with no problems. What vaccine did you get?