I woke up fine at 4:30 am today, fell back to sleep around 7:00 am, and when I got up at 8:30 I was severely dizzy. I have tried eating, and drank a Gatorade, but nothing is helping. I add that I'm on day 3 of my menstrual cycle, although that has never affected me like this before.... Do you have any possible idea of what could be wrong? I have no other health problems, and I'm not on meds, have not been out of the country....