So..I'm taking some common antibiotic for a bad cold and once again after 3 days (6, 500mg doses) I have almost 0 back pain. Yet no doctor will listen to what I have to say. This is at least the 5 th time the same conditions have been noted while on antibiotics. Something tells me I have a very low grade infection in my spine. I've had a colonoscopy in 09 (afterwards was when my lower back pain started, none prior to it). I had a spinal epidural in my mid-back i 08. Anybody care to weigh in ?