Tooler, I sometimes get that feeling when I am in an episode (I'm bipolar), when I am stressed (depersonalization) and other times when I suspect I am more aware of how hard I have to work to stay up with the world. I say that because, with a sister with ADHD, I suspect I have some of the same problems and when my brain gets tired or stressed, my cognitive processing can't keep up with the information that it gets. The world "speeds up" and I feel like time and life start to speed up and rush by.
Do you have anyone in your family who has trouble with concentration or motivation? You don't have to be hyper to have this happen.
Def. get it checked out, because regardless, it is a horrible feeling and you shouldn't have to live with it. Make sure it's nothing to worry about. HUggssssss!
PS. See another Dr. If you have high blood pressure, it might be linked in the way that migraines can be. make sure you are taken SERIOUSLY, hon. You need to be safe. Let us know.