I've had this happen to me twice now within a few months apart. The first time it happened, I could not move at all, I kept wanting to reach over for the phone to call my husband I was so scared. I felt as though I was trying to push myself across the bed. I kept hearing noises like little voices saying she's waking us, she's waking up. I was terrified. From what I can remember I either went back to sleep or was finally able to move. It was almost like I woke up to thinking it was a dream but I know it wasn't. The strange thing also is when I checked the clock I wouldn't have been asleep more the 15 - 20 minutes.
This week it happened again for the 2nd time. It was windy outside and my windows were open. I could hear acorns falling on our shed roof and banging noises but I could not move and I don't know if my eyes were open all the way, because everything was white and fuzzy. Its a terrifying experience, I wish I knew why its happening to me now all of a sudden. I'm 32 and do not recall this from before.