How to treat my burn?

Yesterday I was baking and I had my oven mitts on, I was getting the tray out and it was a bit heavy and was about to slip so I put my wrists inwards and the side of my arm only touched it for about 2 seconds if that and now it is in a shape of a tear drop lol... it blistered up and today I accidently knocked it and it oozed everywhere, the skin is still folded over. It is kinda open, and I don't know what to do!