I have a burn on my hand?

a few hours ago as i was getting ready - i turned on my hair straightner then i walked away - came back - tripped on the rug - and my hand grasp right around the hot hair iron - ive been puttin it under cool water for a while now and im carrying around a bag of ice - it still hurtssd - t looks like old lady skin and its bright red - also some parts look white - what should i be doing?