Why doesn't sex feel good yet, is something wrong with me?

I'm 17, and I've had sex with the boy I lost my virginity to about 5 or 6 times. And I know I'm going to sound like an annoying little child, but it's bothering me how it doesn't feel good. I won't say it's painful, the best way to describe it, it feels like someone is penetrating me with a wooden flute, which is uncomfortable. Yeah, he's sexually experienced, and we do foreplay and everything. It's bothering me! Why is this happening, is this normal? It's really annoying :( , do you have any thing similar, so I know I'm not alone?