You just have a fear of something bad happening to you. I get scared too. This is why I have a tv and radio in my room because if their isnt any noises or sounds to distract my mind from going off into a dark and scary place then thats what ill start to think about. dont worry it should fade away hehe
Oh, I always think about that stuff. I think it's because my mum had cancer and I'm really scared I'm gonna get it too D: did someone in your family drown/get shot/ have cancer?
it could be a phase, it happends to me alot but i do get over it
grandpa had cancer