Naval piercing

I got my belly button pierced last June. It only hurt for a few days after and then only hurt when I bumped into things. Well almost every single day puss comes out of it. I mean everyday since I got the piercing. Which makes me mess with it more cause it gets stuck and slightly painful. Now tonight it itches like crazy and it's the kind of itch you can't scratch. What should I do? Is it normal to have a discharge like that almost daily?