I dropped a couple slices of pizza that was just out of the oven on the back of my hand. I immediately put it under water, then put a bag of ice on it as I went to the store for burn cream. It's been several hours now and I'm not sure what else I can do. I have a decent size blister between two of my fingers and a minor blister on the back of my hand just beneath the knuckle. Redness and pain as well. Please advice. Thanks.