Possible appendicitis: When to call
  Call your doctor now or seek immediate medical care if:
  - You have new or worse belly pain. Or the pain has become focused in one area of your belly.
  - You have nausea and don't want to eat.
 - You are vomiting.
 - You have a fever.
 - You cannot pass stools or gas.
 
 Watch closely for changes in your health, and be sure to contact your doctor if:
  - You do not get better as expected.