How do I get rid of stomach bloating?

In the morning before I eat anything, my stomach is nice and flat, but as soon as I eat breakfast, it expands enormously. And that expansion doesn't go away until the next day. I consider myself fairly skinny and normally, my stomach is flat, but as soon as I eat something, even something small, it expands and bloats. Does anybody know how to get rid of the bloating or prevent it?