Hello, I took a bad fall on my back 48 hours ago. Didn't get to er for 10 hours. Emergency room diagnosed muscle spasms and prescribed 500 mg robaxin up to 3 x a day for pain with up to 8 ibupropgin/day. Worked well for 1day and now I feel no difference at all when I take it. Pain is getting worse. Pretty difficult to get out of chair or bed, unable to lift of open anything with right hand, pain/pressure on deep breathing, and coughing. Should I go back to er?