Is it normal for your head to feel COLD after hitting it rather than painful?

About 10 minutes ago I fell and hit my head on a wall. Not terribly hard, I don't think, but there was certainly quite a thump. But I'm a little weirded out because I feel absolutely no pain at all from it. When I hit it it instantly felt COLD. Not biting cold, just...chilly. And it still feels that way, and now the opposite site of my head feels like it has a light pressure. I can't imagine I could be concussed, as I really don't think I hit it very hard at all, but I don't have any experience with concussions, so who knows. Any opinions/ideas/experiences?