There is no pattern, I get very nauseous, shaking and short of breath. No vomiting. My doctor did blood tests, they even had an ultrasound done. Nothing different except that my blood was irritated . I drank a bit of caffeine up until a few days ago when these symptoms started happening again. (This used to happen a few months ago.) the doctors don t have a reason to this yet. Someone help. It s recurring throughout everyday, all-day to the point where I wouldn t mind dying over this. please someone help or something.