Dear jessieal, Ten years ago you were told that you had Diverticulosis. This is a condition when people develop small pockets or pouches on the large intestine or the colon. Some have a few and others may have more pockets involving long portions of the colon. If one of these pockets get inflamed then the condition is called Diverticulitis, which is infection that could lead to complications such as abscess or rupture (Perforation). This is very serious and may require hospitalization, administration of antibiotics and even surgery. Diverticulosis is more common among the western civilization and is related to lack of ingestion of adequate fiber in the diet. We always advice people to eat more fresh fruits, vegetables , whole wheat cereal (Whole grains) etc. The pain that you are experiencing may be muscular due to bowflex use if you are not having fever, nausea or vomiting or bloody watery stools. Hope this is helpful Good health.