Hello, My baby is nearing two months old, and we noticed his belly button is swollen. Our doctor mentioned it as umbilical hernia. When we push it down, it does go inside, but feels kind of squishy and watery - like some air bubbles are trapped inside. We are worried about it, although doctor did say it'll go away on its own after 1-2 years. What are the symptoms to look out for to ensure this hernia is harmless and not cause of concern?