I noticed a bump the other day on my head so I itched it and it broke open and thought nothing of it. So yesterday I started noticing more of these bumps on my head. They are red tiny little pimple looking things. Some I can't see but I can feel that they have a crust over top of them. Today the amount has doubled. They are sore. They kind of feel like when you have really bad bed head and touch your scalp it hurts. I can't figure out what it is. I've checked for lice didn't see any.