Pain is the most common symptom of appendicitis. It often starts near the navel, or belly button, and might come and go for a while. It then usually moves low down to the right in the abdomen (tummy) and becomes more severe and more constant. It usually hurts to walk or cough. Other common signs and symptoms of appendicitis are: fever (high temperature) an abdomen which is tender to touch, especially low on the right nausea (feeling like throwing up) loss of appetite (not feeling like eating) vomiting, although usually only once or twice diarrhoea or constipation Young children can find it hard to say where the pain is, and all you may know is that they are sick. If it is appendicitis, usually the pain will only be in the right side of the stomach. Unlike gastro, vomiting or diarrhoea are usually mild with appendicitis.