Most of the time, when I get up from sitting or lying down, it feels like all of the blood rushes to my head and the pulse in my head becomes really hard, and my vision turns a little black, I was wondering if anyone else has felt that way. I hope I am not the only one.

Yes. I can certainly relate to the same symptom.

Hi Amanda,
This happens to me all the time...and it's happened for years. It has to do with blood pressure changes when you change positions. I assume it goes away when you stand there for a minute and let the black fade? No worries!

I get that heart pounding dizzy thing when getting up fast and it scares the crap out of me. EVERYTHING scares me. Oh well. I guess I'll live. It has not killed me or anything.

I get it all the time. I think the technical term is "you jumped up too fast, you idiot!".

Don't worry about it. It's nothing.