Permanent Damage?

So maybe that finger injury wasn't quite as minor as I had thought. The knuckle is still about twice the size that it once was, and I'm starting to give up hope that the swelling will ever go down. Maybe I broke it. Still, I'd think it would just look a little crooked or mutilated, not just fat. It's also still a little sore. Is this normal? I feel like it should be coompletely healed by now.