Both of my feet feel like a cross between like if you needed to crack your knuckles and can't ... and having the 2 smallest toes on each foot in a vice grip cranked 2 turns too tight. I have not been able to wear socks, and if I do try to, I wind up ripping them off within half an hour. The underside of each foot feels like it is swollen to 3 times its normal size. I bought a foot massager, the kind with little nubs on 2 spinning disks, and that seems to help some. I really can't use the heat setting though, for danger of causing blisters I can't see or feel, but that could cause major problems.
Nerve pain, and back pain, are really difficult to deal with, as you said. There are days and even up to a week or more, when I can't even get out of the house. I have missed church twice in the past 2 months, and anyone who knows me nows that this simply does not happen unless it is absolutely unavoidable. I go to 10+ doctor visits per month. (and I might hit 15 this month)
I am certain that God has a plan, but I have no idea what that plan is. I am sure that it will be revealed in time. Pain sucks though!