You dont get rid of a hickey , fast or other wise. It just has to fade out on its own. A hickey is where blood has been raised to the surface of the skin , kind of like a bruise and it has to pretty much let the body heal its self
They don't really hurt that much but c'mon. Hickeys are basically bruises, of course they're going to hurt a little, that's obvious :P I've heard that apparently putting a really cold spoon against it helps but I have no idea. If you just wanna cover it up, make up works for that.