For about the last 4 days I have experienced a horrible aching in my legs, it sort of comes and goes. It started in one leg and has moved into both legs now, and is really starting to scare me. The only thing that helps is Vicodin, I take a half of a 500 and it takes the pain away for about 30 minutes or so, but then it comes back. It is mostly in my upper legs and hips and radiates around to my lower back.... I keep thinking something is really wrong... does this sound familiar to anyone? Please, I am really freaking out thinking I have MS or something really bad.