Okay, I passed out again last night in the middle of dinner. This is the second time it has happened. Nobody can figure out what is going on. This scares me after reading the post about strokes. They did tests both times and cleared me of a stroke or heart attack. The doctor sent me to a cardiologist, and I will go on a heart monitor for a month or so. They can't figure out what happens, because by the time I get there I am awake again and no symptoms. It happens so fast. I feel dizzy, then all the sudden pass out. This time I knew what was about to happen, as it just happened a few weeks ago. Luckily I was with my sister and I just grabbed her really hard.... she knew. I am scared, as I don't know what happened or what is wrong. Any one else having these symptoms?