Have you ever woken up early because of bad dreams?

I just did. 4:52 a.m., neck and shoulder aching from too much computer time yesterday, and having a weird nightmare about the ex. My mind was making awful things up that never happened. I dreamed that I was living in the house we used to own together, and someone had drilled through the screws holding the back door to the door frame. I showed the ex, in the dream, and suddenly he was here, online, writing about how funny my fear had been to him, telling people, "You should have seen her face!"