Means I faint.
So the cardiologist said I have a very common disorder called Neuro-cardiologic Syncope thats causing me to faint. Essentially what is happening is the Neurons in my heart aren't properly reading the blood flow and the freak out, trying to figure it out. So My heart tries to catch up, thus beating too fast. Eventually I fall out, and go completely blank. But its treatable with a low dose of blood pressure medication.
yay for science!