<s>[INST] I was on my feet for three days. And now I have lower back pain where I can't stand, sit, or lay down with out it hurting. I was laying down and turn wrong and I had a sharp pain up my whole back. I couldn't move for a little bit. Now I can't really do anything. What could have caused this, and how I can I  fix this pain. [/INST] Could  be   some   acute  sprain   or  even   a   disc  problem   of   spine.  Get   evaluation  by   orthopedic specialist   who   on  physical  tests  can  determine   the  origin  of  pain  and  whether  radiological   tests   are   required  for  diagnosis..In  mean  time   take   combination  of   methacarbamol 750 mg and  ibuprofen  400 mg  thrice a  day  after  meals,,  apply   hot  packs,  take  firm  mattress  to  lie  down  and  maintain   the  most  pain  free  posture  on  lying  down  in   any  position. </s>