One of the best stress relievers (if not THE best) is a good exercise program, whether it be walking, running, raquetball, aerobics, hiking, whatever.... couppled with seeking humor - good laugh-attack humor - wherever you can find it.

Of course, seeing a doctor about your symptoms and getting a physical checkup comes first. Then you can find out what the problem really is, get your current health status recognized, and make sure you can handle some physical activity.