With Lisa. You haven't been off it to let it rest enough to heal. I get that you have to exercise, but you can do things that are less stressful - like walking. I would think that no matter what is wrong with it, with or without an MRI, a doctor is going to suggest rest, too. Unless you're ready to do what is necessary for any injury, I wouldn't "waste" the money to go to the doctor. Really, taking at least a week "off" to let it heal is worth it when you consider the alternative.