Broken knuckles???????

I punched a wall two days ago. (i know its stupid) and now my one knuckle is really swollen. I cant seem to bend my finger or make a fist. When I touch it, it feels squishy. Also when I try to straighten out my finger, it makes this cracking and tearing sound and you can feel it. Is it broken? What will they do? Put a cast on two of my fingers and my whole hand.