Symptoms of diverticulitis may last from a few hours to several days. These symptoms may include:

• Tenderness, cramps, or pain in the abdomen (usually in the lower left side but may occur on the right) that is sometimes worse when you move.
• Fever and chills.
• A bloated feeling, abdominal swelling, or gas.
• Diarrhea or constipation.
• Nausea and sometimes vomiting.
• Loss of appetite.

Complications also can cause symptoms. If an abnormal opening (fistula) develops between the colon and the vagina or the colon and the urethra, you may pass air or stool from the vagina or the urethra.

Other conditions, such as irritable bowel syndrome (IBS) or a urinary tract infection, may cause symptoms similar to diverticulitis. Symptoms such as rectal bleeding, a change in bowel habits, and unexplained weight loss may be signs of colon cancer. If you have any of these symptoms, contact your doctor.