Anyone know this movie?
It was about a group of people trying to survive a zombie apocalypse by hiding out in some kind of bunker (may have been an old power station). I remember that the zombies had something to do with radiation from a comet that had passed close to the earth the previous night, and one of the characters was a former porn star turned over-protective mother.
It was definitely a B-movie, with a group of total unknown actors, and I don't think it was very recent.
I believe it started out with a girl and her boyfriend driving up to the top of a mountain (to view the comet possibly?) and falling asleep up there. They wake up the next morning, realize something is amiss, and eventually find the bunker, and some other survivors. I vaguely recall that she reveals that she's pregnant at some point, but I forget what bearing that had on the story.