For the past two weeks ive been having trouble sleeping. I will lay there and try to go to sleep for 4 hours untill i finaly fall alseep. I will usually lift my head up and start to feel light headed and get real dizzy and start to see blurry. Its like my mind isnt functioning like it used to. And i think about it constantly because it frightens me and i worry about it all the time. Whats wrong?