Thanks for writing to health care magic.
I think your kid is having gastroenteritis
Your kids requires antiemetics to stop the vomiting
as prescribed by your doctor.
If the vomiting are controlled post antiemetics then you may continue ORS as prescribed by your doctor. But if the vomiting are not controlled then your child needs to be given Intravenous fluids to prevent dehydration
Monitor or the signs of dehydration.
They are dry skin
, decreased skin turgor, increased thirst, sunken eyes, decreased urination etc.
The yellow color of the urine indicates concentrated urine is passed and your child requires to be rehydrated.
Hope this helps.