question: Hi Doctor, My baby is 42 days old now.He was a preterm 32 weeks,LBW(1800gram),at the time of birth.From birth he used to take preNan formula milk.By last week he became 2670grams and Doctor advised to start pronan 1 formula.But after introducing pro nan 1 baby is getting occasional loose stool .And he is crying vigorously while passing stool.Please tell me whether I need to continue pronan or prenan? Thank you, XXXX