I ve had chronic lower back pain from 8 to 15, my GP has done nothing but prescribe medication that does not work (no x rays or pelvic exams!), what should they have done? I get it on my period, when i walk for a bit and when i need a bowel movement. I got my period at 12 but yet still had back pain at 8, its happens more now that i have periods. Please help its influencing my life so much, i cant go out with friends knowing that we will walk a bit.