Why do I have this? Help please.?

I"m 19 years old, 5ft tall and I weigh 110-120 pounds. But for some reason I have this stupid pudge in my belly and it makes me feel so insecure about myself. I know it's not because I'm not eating healthy because I'm a vegetarian for crying out loud. I"m a very healthy eater. Is this normal though? How can I get rid of it? It's not real big either, just small but enough to annoy me.