How to treat a sprained finger?

Well, I apparently sprained my finger today at work pretty badly. We got a new shipment of merchandise and rentals (I work at BlockBuster), and I am one of the first ones outside helping with the shipments and unpacking the boxes, putting things on the shelves for display. Behind the counter is where we store the actual DVDS for the rentals (the display boxes are just empty DVD cases to avoid shoplifting). Well, I reached in to the desk drawer to pull out a copy for some movie that I was holding for someone, and my hand got caught and jammed in the drawer and couldn't get out. There was a little blood, and I was literally on the floor because of the pain. They gave me the rest of the day off and I don't plan on returning until Monday. In the meantime, my hand has swollen up to about three times its normal size. There is a HUGE scab on the side of my finger from where I cut it today, but my whole finger is HUGELY swollen. I compared it to other hand, and the size is definitely not normal size. Not to mention, now there is a huge discolored bruise from where I jammed the drawer on my finger directly. Has kind of a brownish/blue & purple color. I have tried multiple things to nurse my finger. 1- I have covered it in ice for about two hours, didn't help. I have taken advil- didn't help. 3- I have tried taping it- didn't help. And the weird thing is, no matter how badly it hurrts, I am still able to bend my finger, and make a fist. But, this is definitely not my week. I mean yesterday, I get a phone call saying that one of my friends commit suicide, and today- this. What do I do?