Yeah, I get the stomach beatings and I can also see my chest shaking with each heart beat, I was scared for a while that I had an aortic anyeurism, but I suppose this is all caused by anxiety.
I am getting really freaked out lately and I don't dare to do anything because it feels like my heart is beating so hard that it's going to stop or tear apart or something...Lol
seriously though, i've had loads of tests and they assure me it's anxiety,
im only 15, i'm scared that with my heart beating this hard it will be strained or damaged and lead to heart failure or something :(