Random blacking out, help?

You need to go see a doctor. Maybe get a catscan. This could turn up either being a small disorder or a symptom of worst things to come. There is nothing wrong with going to the doctor to get check out. So do this as soon as possible. What would happen if his happened while you were driving (crash) or swimming (drown) or while your simply eating or drinking (chock), this could be fatal. So please go to your General doctor and see if he suggest you to get check out at a hospital to see a specialist that works with these types of problems.