Thank you for your query.
I presume that your son is being breastfed. I suggest that you discuss with your paediatrician and get his stool examination done. In case the pus cells are increased then he may ask you to start Walamycin
Just ensure that the child is having enough of liquids and is passing urine at regular intervals.
I hope I have answered your query to your satisfaction.
Wishing your son a speedy recovery..