Gooodness, Nan..that sounds bad..Perhaps your family physician can guide you to the right specialist.....so much is connected..it even might be something wrong in your back.
Take care of yourself..I know that’s not appealing, as taking care of others is what you do so well...but sometimes we are compelled.
I pray for solutions and comfort for you.
I have sort of suspected a nerve in my back, so I’m inclined to start with the chiropractor. Most of the doctors now are too prone to want to replace the knee.