Hi, my baby (2 years old, 11.7 Kg) has loosely formed stools, frequent motions(3-4 times a day) and loose motions in every few days . He is not having any fever, no pain, he is playful. But no weight gain in past few months. I have consulted doctor and he suggested pro biotic. He is fine after probiotic for few days but after that again the same problem. Any suggestions.