Im really worried help me something is in my head?

Talk to your mom or dad. You may have bumped your head while playing or while sleeping on your bed. You may have a bug bite or pimple that is swollen and maybe infected. There are so many things that it could be. Your parents will look at it and be able to decide if they can treat you or if you need to see a doctor. Don't worry or be scared to tell your parents. It is most likely something very simple that they can treat with heat, ice or some medicine. But DO NOT do anything yourself without telling your parents or you could make things worse! Tell your parents IMMEDIATELY!!! I am always telling my kids the same thing. If you don't tell me then I can't help you!