So much joint pain after sitting down, it takes up to 5mins to feel ease?

pain in my joints, unable to walk with ease now, the bone connected to my hips, and the back of my right knee is so painfull. I cant even get in or out of the car, I cant put on my under clothing with out some sort of pain, not even my shoes! its so difficult to lift my leg up, my Hips, my bones feel like they are being crushed...HELP