Hi, the child could be suffering from Indigestion or gastritis. This causes pain abdomen and vomiting and indigestion. Give your child Syrup Rantac 1 ml twice daily before feeds. Syrup Ondem 5 ml once daily to prevent nausea and vomiting. Give plenty of fluids in form of juice and ORS solution to keep his hydration adequate. Avoid spicy and oily food. Semi solid feeds like mashed banana, curd, probiotics like Bifilac syrup. If he continues with these symptoms, give him antibiotic course like Oflox-Oz twice daily(depending on his weight) for 3-5 days. Keep a check on his drinking water. try giving him bottled water only as dirty water supply can cause such an episode. Thanks and regards.