Hi I have a red bump on my forehead with a tiny black dot the size of a pore on my forehead. When you look at it, you can't see the bump, you can only feel it. I've had it for over 3 weeks. It started out huge, like the size of two quarters, there was a raised red bump and underneath it was a big white bump twice the size extending down to my eyebrows. This lasted for about 2-4 days. Then it developed a white center, with puss, and it eventually popped and oozed puss. But I know it's not gone completely because I still have the red bump with the black dot! Please tell me what it is and how to treat it.