I have been feeling dizzy, but not all the time, and nothing seems to aggrivate it or help it, it just shows up. I also feel wierd sensations in my head. Sometimes it is tingling or other times it is sharp pains. Some days are better then others. Also some times I feel like I am about to throw up, but like the dizziness it comes and goes. I have a history of worrying about my health, and I am so scared that something could be wrong. Does anybody know what my symptoms describe?