A dull ache in your shoulder that reverberates down your side. Fleeting discomfort in your belly or torso. Body aches are incredibly common, especially as we get older, and it's easy to blame aging or stress. But some people - perhaps having witnessed a loved one cope with gallstones - may wonder if their aches are a sign of the common condition. How easy is it to default to that conclusion? It depends on how bad your pain is and where it shows up, says gastroenterologist Dr. William Brugge, a