I woke up this morning quite early so I got back in bed and closed my eyes for what felt like two seconds then I began to hear a noise next to my bed which sort of sounded like someone typing on a keyboard but I ignored it because I thought it was my bearded dragon moving around in his enclosure. The noise continued for a bit then stopped and suddenly I feel a pressure applied across my chest as if someone was there holding me down pushing harder and harder. I couldn’t move or speak, I wanting to scream out so badly and I was too afraid to open my eyes, it felt so real, as the pressure increased, a ringing sound grew louder in my ears, and I couldn’t breathe, if felt like I was dying. But then I jumped up opening my eyes and gasped air frantically, this has never happened to me before and I was so scared to go back to sleep. I had only gone back to sleep for a few minutes and it began within few seconds after closing my eyes when usually it takes me a few minutes to drift of to sleep. It had felt like something was pressing on my chest even after I woke up. I’m scared to go back to sleep and the only way I can calm down is if I know what this is.