Sudden worsening of right lower abdominal pain
Pain that becomes widespread across the abdomen
Belly feels hard, swollen, or very tender
Fever or chills
Nausea or vomiting
Loss of appetite
Pain that briefly improves, then gets much worse
Rapid heartbeat
Trouble standing up straight or walking because of pain
Pain with coughing, movement, or touching the abdomen
Confusion, weakness, or feeling very ill
Seek emergency medical care immediately