Constant Pain and Discomfort - No Answers!

I've been to so many specialists and no one knows what's causing my pain and discomfort! I'm literally at a dead end and don't know what to do. I have constant severe throbbing pain in my ankles to my feet that's worse at night and in the mornings. It's too painful to do any exercise and even being off my feet doesn't relieve pain. The tips of my big toes have gone numb and sometimes my legs/feet will get tingly. I also can't regulate my temperature anymore. My whole body is always either too hot or too cold. It's much worse in my hands/feet. Does anyone have similar symptoms or know what this could be?