Why is it??

So, my sister had a baby today! woo hoo!! I hear she is pretty cute! I hope to see her soon! I had her kids today while she was giving birth! After the babies was here and they were ready, I took the kids over to the hospital. I had to head to work so I couldn't go in, but while we were waiting for Trent to come out and noticed something. There are a lot of pregnant women at the hospital! Seriously! A lot of pregnant nurses coming and going. But my question is this...Why are there more pregnant women LEAVING the hospital than COMING to the hospital??!? Seriously! Like 10 or 12 pregnant bellies left while I was sitting there, and maybe 2 went in. Hmmm....just a little weird!