I had the same thing happen @ 34 weeks. Went to L&D And I was dehydrated. Make sure you are drinking at least a gallon of water a day. Good luck!
I had it happn to me before while i was getting a haircut...could be ur blood pressure...i drank some cold water and put the fan on me...felt alot better right after..
I had some trouble with dizziness and vision blurring. It was blood pressure. I just took it easy and it was fine.