Why does my tongue piercing have a big bump and why does the ball rub on the upper part of my mouth?

I got my tongue pierced on march 2,2009 it got big like the lady said it would but now it hurts a lot more my tongue has a big red bump on the top part by the ball, and the top ball rubbs on the top of my mouth it hurts? Is there any thing i can or need to do?, I clean it like the lady said to.. please help
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