Pain on left side at bottom of rib cage in e front. does not get worse with exercise. pain is intermittent. it is like an ache not a throbbing pai?

Different causes: Usual causes of rib pain are trauma, musculosketal bruise , fx, or muscular strain.Inflammation in anterior cartilage so called costochondritis( (viral in etiology) can cause pain which reproduce by pushing on the involved cartilage in the front of the rib cage. Pleuritis (inflammation of lining of lungs( can also cause rib pain and pain with breathing.If continues should see physician.

PAIN FROM COLON: This type of pain is most often associated with either increased air in the colon or smooth muscle spasm of the colon, especially if it is intermittent. Supplementing with acidophilus and magnesium aspartate from a professional source may help here. Increase fiber to prevent constipation and promote regular bowel movements as well. Consider an abdominal x-ray to rule out anything more serious.