I am an 18 yr old female. I passed out sitting. I started shaking and turned blue. Ever since I havent felt good.Very dizzy. I saw a doctor about vertigo, and was not diagnosed. My EKGs are fine, my stress echo was fine, and then the tilt table test.. during the test, after a nurse massaged my carotid artery, I passed out and my heart stopped for about 4 seconds. I shook and turned blue. My doctor is suggesting I see an electrocardiologist,and talk about pacemakers! YIKES! Any second opinions?