Ive been super dizzy most of this pregnancy, didn't happen at all in my first one.
It happens when I don't eat often enough.
It happens when i stand up too fast.
It happens worst if I'm standing in place for a long period of time. twice it happened to me in a long line at the grocery store, once at starbucks. Now I'm scared of long lines lol.
Sometimes I even black out for a sec, so I have to sit down right there. It's no fun to be the weird lady who is sitting next to her shopping cart on the floor.
My doctor says when I'm standing a long time the blood pools in your feet and cause you to get dizzy, and possibly black out or faint. I have low blood pressure sometimes, but that is very common for blood pressure to drop during pregnancy.
As long as you don't fall down and hurt yourself you should be fine.