Whenever I get up after sitting or lying, I can see black spots covering my view until it become pitch black for a moment. And my head hurts so much; sometimes, I almost fainted and fell to the ground because I couldn't control my body. I'm worrying about myself since it happens everyday.

I'm also a migraineur and have anxiety since I was a kid. But this year, I my head hurts almost everyday that I couldn't even go to school sometimes. I can see lights flash before my eyes, which make the pain in my head worse.

Please help me, I don't know what's happening to me. I'm 17, and does my migraine related with the blackouts every time I get up?
For additional information, most of my relatives on my mum's side are migraineurs and my grandparent died from stroke.