These links will take you to the AAP website.  There are 3 tabs in the upper corner of the website: Definition, When to Call and Care Advice. Make sure you look through each tab...

My child is vomiting or has diarrhea

My child has a fever

My child hit their head

My child is constipated

My child has a rash

My child has a cough

My daughter has abdominal pain

My son has abdominal pain

My child took too much medicine, drank or ate something that could be dangerous