Can't stay asleep.

I don't need to pee, I don't have heartburn, the baby isn't keeping me awake, I just cannot stay asleep. I'm fine for the first few hours, then it gets to about 3-4am and I'm wide awake. I can't get up and do anything because the dog will think it's breakfast time, so I'm just lay here watching my husband snooze. Very annoying. I've always been a good sleeper, a real 'head hits the pillow' kind of girl. S'pose it's good practice for when the baby keeps me awake. *every cloud* and all that. 🙄