I get these weird things about 5-7 times a day. They're getting more frequent: I'm sitting down I'd laying down or even just standing then when I move around my vision goes black, I get extreemly dizzy and dioriented and sometimes fall down. My doctor said it's normal because the test results were normal. I've done some tests myself and it's worse when I don't drink enough water, and / or drinking caffeine and/or when I'm tired and /or when I just wake up from a nap. I don't trust my doctor. Anyone know what they are? Oh, and I get a throbbing headache afterwards. Sometimes the headache lasts for 20 seconds to 5 minutes and can get so bad that I actually puked from the pain once.