I'm 13+4 and I've been getting pretty dizzy when I stand up. Well, today I was at target with my 2 year old and feeling fine one minute then the next I had blurry vision, was sweaty and couldn't focus. Next thing I knew I was on the floor. I stood up, grabbed my daughter out of the shopping cart and ran to the bathroom to throw up. I guess I must have had low blood sugar or something because I didn't feel better until I ate something and drank some water.