Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice. I have gone through your question. It seems your son is having food poisoning
which usually starts with vomiting
followed by fever, and then loose motion
few times. Accompanied symptoms are little headache and stomach pain.
Food poisoning symptoms subsides within 48 to 72 hours on its own. I would suggest you give your child Syp Emeset
and Syp Gelusil
MPS [Antacid] 5 ml 3 times a day. Light and non oily food will help.
Hope I have helped you. Let me know if I can assist you further.
Dr. Saurabh Kumar