Waking up every three to four hours?

For the past week, every single night, I've been waking up every three to four hours. I'll realize I'm dreaming and try to manipulate the dream, then about five to ten seconds later I'll wake up. After waking up, I realize what has happened, then go back to sleep while thinking of what I was dreaming and resume the dream. In three different sleep sessions, this has happened to me two times in a row in each session.

Anyone ever have this annoyance(?) and/or have a solution? I'm a deep sleeper, which it isn't external stimuli, but internal stimuli, which I assume is from gathering too much awareness.