I'm surprised you didn't feel very dizzy. Have your equipment checked. If it's one of those
home devices, take it to your GP. Ask him/her to check your blood pressure properly with a stethascope and then try your monitor to see how far out it is. Most doctors don't
mind this because they are fascinated to see how accurate it is. Once you know, you can basically subtract that difference each time.
Get to a doctor before you stroke out or have a heart attack!!!!!