What To Do For The Swelling In The Hand Due To A Hit?

I work as a stocker at a pet store and I punch boxes all the time to unglue them. Well This particular box that I punched thursday happened to be an aquarium stand, so it was like punching a wall. Now my hand still hurts very badly I have limited movement in my pinky finger and my wrist is sore. My whole hand is swolen and my palm is a blackish/blue. The area of flesh that runs between your pinky and wrist on the outside of my hand hurts almost unbearably when I try to grip something tightly. Do you think I just bruised it badly? Or did I possibly fracture something and should go get it looked at? I don t have insurance so I m trying to find the best possible solution.