I can't think clearly?

it feels like looking through a haze. If I try to picture something, i can't do it. If I'm watching a movie, its like i'm looking straight at it but my attention is never on the screen or i want to do something else but don't know what. If i'm reading something, i can't process it. Something in the back of my mind says theres going to be something bad but i can't even tell what that is. When i wake up in the morning, i feel this bad feeling. Whats wrong with me?