I have an abnormal EKG. I have what's called a right bundle branch block. but they call it a "normal variant," which means it may not be normal, but it's okay. There are a lot of things that can fall into that category, or may not be "normal variants", but are okay.
I forgot to mention that a fast heart rate may also be due to dehydration, but I think in your case it's probably due to anxiety. A fast heart rate isn't going to damage your heart
I'm glad that your a1c was good, and you are so relieved!
How far are you into the new book? Is it as good as the last one?