Didn't heard this b4, not so serious right? Sometimes I also feel dark, then I'll touch the things just next to me & stand for awhile b4 walking further, doctor told me I'm below normal blood pressure. In fact, I thought this will only happen to those slim lady, as I'm not slim. Still remember when I"ve Ansel (nearly pregnant for 2 mths), go to Waston to looks things with hubby, suddently so tired & dark, then I think I can put my head on his shoulder, afterwards I didn't know I've fallen down on the floor, just hear that he loudly shout my name. I wake up then I know my "bat bat" has a bit pain.