First Time

My first time astral projecting was a short time ago. I was laying perfectly still in my bed and had the intention to move out of the physical. I began to feel like I was floating above my body and then I felt as if I was being swung around by something. It slowed down and then sped back up. When the feeling subsided , I looked at my arm and I had scratches that were not there before I layed down .... help?