Very scared right now

Last night I had a dream where I was reading through the book on my night-stand. Eventually I became too tired to read anymore and ended to stop, but I didn't have a bookmark, so instead I ripped out one of the pages and uses it to mark where I was reading (I would never, ever do this in real life).

Today I woke up and discovered that I wasn't dreaming. I saw the torn out page stuck into a random place in the book.

How could this happen?!? Do I need to see a doctor or a therapist?