Strange, I completely forgot that I had commented on this when I didn't have an account!
But anyways, I go through the same thing, like having as many as 5 or 6 or even 7 a night. It gets scary, because then you are so tired, but are so afraid to go back to sleep--so you try to stay awake. I wish I knew why it happens. I'm going to mention this to my doctors, to see if I can get any relief from this terrifying disorder.