Is it normal if I start seeing black blurry spots whenever I get up

[ceeuonthetop]

Whenever I spend some time in my bed and I get up quickly my vision suddenly sees some black blurry static shit as soon as I get up, it normally disappears in a few minutes, is that normal? I've looked it up at Google and it could possibly be something involving a tumor

 

[Nenestar]

ask grok

 

[glamora]

low iron maybe