question: Hello doctor, My cousin, a newborn baby, was born four days before, male, 51 cm and 3.1 kg. He is crying, and we think that he cannot poop. He drinks breast milk. And every time he farts he cries and, we thought he has a hard time getting it out. I would also like to ask if he is allowed to drink water and if we can do mixed feeding (alternate drinking of breast milk and formula milk).