I've hit a brick wall, what next?

HELP!
I have had chronic foot pain for about 5 years. Been to several doctors. Recently had surgery in both of my feet for tarsal tunnel and plantar facsiitis. But nothing has relieved the pain! My pain gets worse by the day. Its radiated up my legs and into my back. Now I am dealing with lower back pain. I have trouble walking, standing, anything to do with putting pressure on my feet. But you would never know, I can walk/stand for at least ten minutes. I look fine. I finally saw a pain management doctor. He wanted to get some tests done. So far I know my blood work was normal and the nerve conduction test was normal. So what is causing the pain? It seems like no doctor wants to take responsibility for me, they throw me around like a hot potato, no one wants to take the time to figure out a correct diagnosis. I am so frustrated. I have no support either, people just tell me "well others have it worse than you, why are you so depressed?" and I get that from those closest to me! They don't know what pain is like! They don't understand that my will to live gets harder each day. I went from being very active, athletic, and working full time to an unemployed couch potato. Can anyone here relate? And what do you do next, when doctors don't know what to do?

Thanks! My pain management doctor just called me to tell me my mri was ok but I do have arthritis in my back, but its not causing the foot pain. So he thinks its the same thing I have been diagnosed with and had surgery for-plantar fasciitis and tarsal tunnel syndrome. I see him on Monday to figure out a plan to control the pain. It still does not make sense to me, but I think I will stick with my PM and see what kind of treatment plan he comes up with. Thank you so much for replying, it is helpful to know I am not alone!

Have you done any reading about spondyloarthritis also referred to as spondylitis? Your symptoms make me think of that.

best wishes