Invisible Breathing

I was laying in bed getting ready to go to sleep. It was 11 at night. I had just turned my television off. I was laying on my right side and I was facing the room. I closed my eyes and tried to sleep. I then heard the floor creaking in the corner of my room. I didn't think anything of it and shut my eyes and continued to try to sleep. I heard more creaking in the corner, and it eventually got closer and closer. I was a bit freaked out at that time. The creaking eventually moved all the way to my bed. I then started to hear heavy breathing. I stopped breathing myself because I figured I was a little scared and was probably breathing heavy. It was not my breathing, it was somwthing else breathing. When I stopped the breathing the other breathing continued. It was directly in front of me and I couldn't see anything. I was so scared that I was frozen in place. I laid in bed paralyzed for hours. I just sat and stared at whatever it was. But I couldn't see it. I wanted to move so bad and run but I couldn't. I finally got enough courage to move. I slowly wrapped myself up in a blanket and crawled to the foot of my bed. It took me probably a half hour to get from one side of my bed to the other. I finally got out of bed and I very slowly walked across the hall and laid down with my dad. I again was facing the room and laying on my right side when I got in there. I then heard the floor creaking in the hallway. The creaking slowly moved closer until it got right to my face. Then the breathing started again in front of my face. Once again I was frozen in fear, and I remember watching the clock and I didn't fall asleep until 6 am. It breathed in front of me the whole time. Anybody know what this was and or why? Anything and everything helps.