Since the end of March I've been unable to do any form of serious training due to pain in my hip. Any time I start to run a gradual pain will begin in my hip about a mile or two in, and the pain will get worse and worse until I'm forced to stop for a few minutes. I've been to a doctor and had both an MRI and an x-ray done but neither showed anything. I also went through about 2 months of physical therapy and currently I am going to a chiropractor about once a week to get my hips adjusted. The pain also will come up during the day even when I'm not running. Anyone have any idea what it might be?