Back pain question

[TripleAAA]

About 3 weeks ago, I fell down a flight of stairs. The worst pain was in my lower back, from about my first lumbar vertebra to my sacrum. The pain seems to be lingering. I can hardly sleep at night, ibuprofen doesn't help, vicodin I had left over from dental work doesn't help, and muscle relaxers (flexeril) barely take the edge off. I've tried cold and heat. Massage makes it feel worse. I have to keep moving around, as sitting or laying in one place too long makes it ache. Sometimes it goes down the back my leg, and I wonder if I pinched my sciatic nerve. Should I go see my Dr., or should I hang on a bit longer to see if it gets better?