Herniated Bellybutton

We went to the doctor today. I've noticed, for about a week, that Owen's bellybutton appears to have become an "outie". I'm pretty sure it wasn't an outie before, so we had it checked out. Sure enough, he does have a minor herniated bellybutton. She asked me if it got bigger when he cries, and I said, well that's tough, because he doesn't really cry. It does kind of push out when he flexes his stomach or grunts. It's less than 1 cm across so the doctor is pretty sure it will close up before he's a toddler. No big deal, and quite common. He still has a future in modeling, she says. I sort of figured as much, but I wanted to be sure.