I am 15 months pregnant and 19 years old. My problem is, when I stand in one position for too long, I become really dizzy, weak, lightheaded, I feel like fainting, my vision turns dark, and I hear buzzing. I have to keep moving when I am standing. This has been happening for awhile. This used to happen when I was younger, my mom thought I didn't have enough sugar, I don't think it's that though. I can't see a doctor till I get medicade.