I need help how nightmare decoder????????

okay so i have really intense nightmares that my councilor calls night terror because the physical harm i placed on my self....i can never figure them out but last night two guy were a indoor prac pool for wake boarding...next thing i know one of the speed boats was attacked by something big and we all rushed out of the water into a little office area. Later we found out through a torn through open door...(not the brightest move) that it was a crocodile... we sat there coming up with plans other then to stay high off the ground when we heard it coming and other then blocking the doors the rest of the way then one of the guys saved me..he was my bf in my dream i actually felt the pain of the crocks claw dig into my skin....now i have scratches on that arm....me and the other girl who was my sister were confused and didn't know how any of this happened the other boy told us he was going out to see if the door to the outside opened....two steps out and he was gone. my sister and i finally escaped by busting out a window.....we ran and ran and that's all i remember....but what does it all mean...and there is this little girl in all my dreams and usually shes the one killing me but this time she just watched.