I have had weird experiences while dreaming for a long time. Usually they are strange enough to make me think about them all day, but recently I have been having times where I am aware that I am dreaming and then I suddenly feel a great sense of fear or danger. Most of the time I feel something grab at me and I instantly wake up, sometimes to re-enter the same dream. I had an experience last night where I stayed asleep as long as I could but it got a bit too freaky. It felt like something attacking me. When I woke up there was nothing wrong or unusual and this time I again had it happen the moment I fell back asleep. Has anyone had this happen or does anyone know how this occurs?

Thanks