Thank you for your query. Based on the limited information you have provided,your child seems to have been suffering from an attack of viral gastritis. Rest, paracetamol
,adequate hydration,antacids should take care of him.If he develops a coated tongue,severe pain in the right lower part of the tummy which is painful to touch it might be a case of appendicitis
.If the fever is associated with burning sensation during urination it might be a case of urinary infection.If your child persists to have abdominal pain
with fever consult a pediatrician
.Hope this helps you.Wishing him a speedy recovery.