Thanks for your query.
Your baby is having diarrhea
and is mostly viral in nature and takes few days to subside.
Most important is to maintain hydration.
Give oral rehydration solution sip by sip after each loose stool
.give coconut water,curd,banana,boiled potato.
Give lactobaccilus for 2 to 3 days and zinc for 14 days after consulting your treating doctor.
Monitor her activity and urine output.
2 to 3 Pus cells are not very signicifant.
Wishing your baby good health.