A week ago I got a sharp pain in my left pelvic area, and ever since then I have gotten sharp back pain in my sacral/lumbar region, with dull pain on my left & right side in my pelvic region. I haven't done anything strenuous to my back or injured myself & my bowel/urinary habits are normal. Nothing else seems abnormal. Just wondering what it could be. I've tried taking advil, but nothing is alleviating the pain. It's constantly their with no relief no matter what I do or how I sit. Any ideas?