I have had antalgic posture & pain in back/abdo/leg for 3 months. chiro cannot straighten me. drs don't know. what could it be?

See ortho / neuro doctor: chiro scope of practice is limited to spinal column. They are not trained to recogniZe and treat other pathology. Your problem may not be skeletal but likely medical/ neurological if chiro intervention did not help so far. Start with your primary MD. You may need eval for your internal organs and peripheral nerve system functions.