I went to pick up a coat that was laying on the couch and I tweaked my back in such a way that my legs gave out on me with intense pain in my lower back. I have been in bad pain since. I went to the Dr. today and he gave me pain killers and muscle relaxers. I can't afford an xray or MRI as I don't have insurance. I have to update Dr on friday to let him know if it's getting better. Has anyone ever done this before? if so what caused it?