My daughter is 3 months old. for the last 2 weeks she is having loose motion. her stool test show 2-3 pus cells. plz advise?

Need other info:: 1. What is she feeding? 2. what was her weight gain from birth to 2 weeks ago, and what was it in the last 2 weeks? 3. How many loose motions a day? Color? 4. Vomiting? Activity level? Fever? Any other concerns? Short version: a baby that continues to gain weight properly, and is acting well, while having loose motions, rarely has any real problem.