"My son had a stomach flu on Thursday and Friday. Since then, he has been complaining of stomach pain and last night he started running a fever."

If your child has had diarrhea followed by a fever, it is recommended to consult a doctor within 3 days to rule out any possible parasites causing the symptoms. Persistent fever that does not improve after a few hours may indicate a need for medical attention. It is also possible that the fever is due to a different infection, such as a cold.