I flashed - I saw bright yellows, reds, and oranges, and I saw my prey - the nurse. I bared my fangs... and I was ready to go chew her up and spit her out!
Remember, just because your BP seems fine in the center, it still takes the body time to adjust. My BP was fine in center, then I stopped at an ATM and nearly passed out. I got home and my BP was below 100.