hello, for about 6 months now I've been having some dizzy spells. it happens when I get up too fast or sometimes I just happens randomly (like sitting in class to just laying down) while It's happening my vision goes white and I cant see anything but that. my bod goes limp and I fall down, my body feels heavy but I start shaking without my control. a few months ago I actually fell don and hit my head on a corner of a desk and then a couch arm. luckily, I had a friend there wit me to help. I haven't spoke to a doctor about this but its getting worse to where it can happen 3-5 times a day. I'm making an appointment soon so i can have a professional opinion.