Cannot move at all, back pain

Patient: I had an accident a week ago, where i was pushed a fair distance and landed on my back. i was rushed into hospital and seen to… but they didnt tell me EXACTLY what was wrong, all they said was that the xray was clear. since then i have not been able to walk properly as when i put weight on my right leg, it immediatly ‘gives way’…. today i was hobbling about and my leg gave way, but to stop me from fallin, i sat on the end of my bed. my bed has a metal foot board and i banged it pretty hard, now i cannot move at all without screaming in pain… what do you think?