Thank you for your query on Healthcare Magic.
Your child is having a viral fever
For fever give Tylenol
every 6th or 8th hourly depending on the presence of fever.
If there is a high grade fever you can do tepid sponging with lukewarm water in addition to Tylenol.
Give plenty of oral fluids and provide adequate rest for him.
For vomitings you can give an anti emetic like ondansetron
in prescribed dosage.
If the fever is not subsiding within 48 hours consult again your Pediatrician
for the reexamination of the child and for basic investigations to know the focus of infection.
Hope I have answered your query.