My baby is 1 and half months old. His belly looks swollen. He is on both Formula milk and Breast milk. I had him physically examined by a pediatrician when he was 25 days old.and recently got him checked again as his belly still looks swollen. He said that everything looks normal. But i am not able to set aside my worry regarding this. Why does his belly appear big if everything is normal. Is there a reason for this? Should I get a second opinion?