Hard raised bump on face

I have this hard bump on my face right underneath my left cheekbone. It has been there for over a year now. I have left it alone hoping it would go away but never did.  It feels like a hard little ball with most of it being under the surface of the skin. One day while picking at it, it popped. It was a white gooey like puss (eww)..When it was drained it was still a very small bump on my face. It ended up coming back a few months later...i don't think it's a cyst because it popped once..Any ideas on what it is and what should be done...thanks