Girl I had pretty much the same thing going on with me. But not just at the beginning, even in the later months so I just asked my doc what it is and it’s low blood pressure. It could be u have the same thing. It’s very common to have low blood pressure, especially being young and pregnant. I get that all the time, and it is dangerous later on cause u can pass out from that. It just meens your brain isn’t getting enough blood, so u have to sit down and put your head low between your legs.