Last night I was laying in bed and was about to fall asleep, but all of a sudden it felt like I was being forced to sleep. As my eyes feel shut, I could feel my heart beat rapidly increase, and so I was naturally able to fight it off. Finally, I went to sleep and this is where I could no longer tell whether or not what I was experiencing was real or a dream. I would hear a ringing in my head that steadily increased in volume until it was deafening, and as it did, my heart rate would increase as well. What happened to me ? I have a heart condition, and insomnia .