Are you overly tired and notice you are short of breath? I had all of those symptoms and I found out that I was severely anemic. I found that out when I had to be tested for diabetes. You could ask your doctor about it?
Yes and when it does it I get sweaty and dizzy... it's horrible...
It happened to me when my blood sugar was high. It scared me until I found out what it was.
Yes I feel it often. I did some reading that said it was normal because your blood vessels are expanding and the blood is pumping through you faster...