I figured out how they happen its when i take 10 or more steps it starts
Seriously? Like, sitting then standing and walking = get headache? Is just standing up enough? Does it happen if you are already standing for a while and start walking?
Not sure how old you are. I went through a period of time in my teen-age/young adult years where my circulatory system hadn't caught up with my size or something. All I know is that if I stood up to fast, within a few paces I would either get a blinding headache or pass out. Was almost fun the first few times.
And if I bent over to pick something up off the floor, it felt like my head would explode. (I may be exaggerating that slightly.)