SN instructed patient on Colostomy Care. You contact your healthcare provider if: You have a fever, you have a foul odor coming from your colostomy bag or stomach that lasts longer than a week, your skin around the stomach becomes red and irritated, you have nausea, vomiting, pain, cramping, or bloating, you do not have regular bowel movements through your stomach, the size of your stomach changes, you have questions or concerns about your condition.