I am a 20 year old female. I experience nausea, on a frequent basis. Sometimes if I can eat something it helps, but not always. If I am unable to eat (due to schedule) symtoms worsen, and vomiting, dizziness, pale, cold sweats and feel like I am going to pass out. My doctor ran a fasting glucose which I was told came back normal. What else could it be if not low blood sugar?