I hurt my hand really bad

Ok I was in my garage practiceing karatie moves on a punching bag next to a wall. I did a spinning punch move and I missed the bag and I hit a 2X4 sticking out of the wall verey hard. It was a stupid stupid mistake(and please save the coments of why I shouldn't have been doing this I was doing this because I was just bored) and I'll regret for a long time. I cant get myself to the doctors right away because my parents aren't home yet and I cant get a hold of them. The place the 2x4 hit my hand is on top of right before the wrist starts. I can currently move all of my fingers and I can twist my wrist just fine. But my hand is swelling in the area were I hit it and im experiancing dull pain in my hand. I have a bag of ice on my hand and I'm trying to keap it in a steady posision. I'm not sure what I did to my hand if i broke something or I tore ligamets. I'd like to get some suggestions of what I should do while I wait to go to the doctor and If anybody knows what I could have done to my hand. I will be verey graitful of any help from you guys.

Welp I went to the doctors and got my hand checked out. It turns out that I just bruised the med carples really bad, the doc said I was lucky because I could have destroyed the nerves in that area or could have broken my hand.
Argh the doctor was like "its a good thing you didn't hurt your self on one of those motor bikes" I would have rather hurt my hand on a dirtbike but oh well. I'll be back out on the track this weekend.