Frostbite

I was walking home from school without wearing a hat on a freezing day. When I got home my right ear was solid white and frozen, it was stiff and hard to bend.  I warmed it up for 10 minutes, then i took a hot shower. It hurt a lot while it was warming up.  After I got out of the shower, my ear began to swell, it got very fat and very red. It didn't hurt at all, it just kept on getting bigger though. I eventually fell asleep and the next morning the back tip of my ear is very swollen. It is just like a giant bubble on my ear. Later that morning it started dripping some sort of yellowish liquid, but it stopped ofter a couple of hours.  I uploaded a picture onto ImageShack of the swollen part of my ear:     [URL=http://img93.imageshack.us/my.php?image=1000118ez7.jpg][IMG]http://img93.imageshack.us/img93/1150/1000118ez7.th.jpg[/IMG][/URL]
I am not sure how serious it is, if someone can give me advise on what to do, should I go see a doctor?
Thanks In Advance.