Sudden pain that starts near the belly button and moves to the lower right abdomen
Pain that gets worse quickly and becomes severe
Pain that worsens with movement, coughing, or walking
Loss of appetite
Nausea or vomiting
Fever
Abdominal swelling or bloating
Tenderness when pressing the lower right abdomen
Rebound pain when pressure is released
Inability to pass gas or stool
Diarrhea or constipation
Feeling very ill or weak
Rapid heartbeat
Signs of shock, such as dizziness, fainting, or confusion