I hurt my back! Oww!

Three days ago I woke up a little achy in my low back. By dinnertime, I couldn't walk without spasms shooting up my spine. I was in tears! I even took a vicadin and all it did was make me loopy.. pain never changed. next day was a little better (no tears, still painful), and today is about the same. Any suggestions on how to get rid of the pain? I'm so tired of laying flat on my heating pad!