Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.
It seems your kid is having viral diarrhea
. Once it starts it will take 5-7 days to completely get better. Unless the kid's having low urine output or very dull or excessively sleepy or blood in motion or green bilious vomiting
, you need not worry. There is no need to use antibiotics unless there is blood in the motion. Antibiotics might worsen if unnecessarily used causing antibiotic associated diarrhea. I suggest you use zinc supplements and ORS, as hydration is very important and crucial part of treatment.