Suggest Remedy For Pain In Leg

About a year ago while training for a 5K, I got a severe stitch while running. It was on my right side, directly below last rib. I realized there was a bulge there, and it was nearly impossible to continue running. The bulge is about the size and shape of my pinky finger. The bulge has continued to pop out at times over the last 11 months, but not extrememly frequently. Now that I have began running again, it is causing me a lot worse, and more frequent pain. I went to the doctor after the first few weeks of this last year, and she gave me a muscle relaxer saying it was probably a spasm. Doesn t feel like a spasm to me. Any thoughts????