I am a 14 year old girl, and I just recently got a trampoline, it seems like while I'm jumping, after a high jump, or abrupt movement of my head, it hurts, it feels like when I go up my brain is hitting the top of my head, I know that's probably not possible, but I was just using that as a comparison to the pain, It isn't like an intolerable pain, but I can feel it you know? Like something in my head, and I hear a noise in my ears to at the same time I feel the pain, and the trampoline isn't the first time ive felt like that, I remember back in the fall when I had p.e and we would do jumping arobics I wouldfeel it in my head, but after that I had no other symptoms. I'm a very active person, I'm an athlete, and have never felt anything like that while playing any of my sports, but I am just really concerned, any Ideas of what it could be? Am I dehydrated low blood pressure? Those are all things I gott of the internet.