Yep... I'm exactly the same!
The backpain, pelvic and pubic bone pain I have are almost unbearable and have me in tears or close to it most nights... It is impossible to sleep or get comfortable, and when I actually do, I don't stay that way for long, or I need to go to the toilet.
Just try to remember that it will all end before you know it
I hope your back and feet feel better soon... pester your DH for a massage and foot rub.