What's the pain from ? You said you're in a wheelchair.
I have inflammatory arthritis and take 4-10mg hydrocodones a day. This is a recent increase and it's finally adequate.
My doctor is into intestinal inflammation as being a probable cause, and I'm going to try gluten-free for a week to see if it works.
If you include non-celiac gluten sensitivity, and wheat allergy with celiac, there is an interesting percentage of people who have a problem. I make all my own bread. I sure hope it's something else....