how often does your vision go black when you stand up?

If this is happening a ton, it's most likely issues with your blood pressure.You definitely need to go get your vitals checked, maybe even an EKG to make sure you don't have any abnormalities with your heart. Every time you stand, sit down, move your blood pressure changes throughout your body as it should but it really shouldn't result in any changes in how you're feeling. It wouldn't surprise me if you get light headed a lot too. So... definitely need to get to the doctors.

You could have an issue with your blood sugar or blood pressure

@Frostcloud😲please get yourself checked out

Go see a cardiologist