I know how you must be feeling...and I am really sorry.
This is a tough challenge to be sure.
If it is any help to know...
...many people with anxiety also deal with costo and fibro. I don't know the connection...perhaps because those of us with anxiety are extra in tune with our bodies perhaps?
...but the fact remains, it is a common co-morbid experience, and would explain your physical pain. (what you describe sounds like it could be costo)
Please use those self help ideas from the Resources!
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT