I suspect it was actually the pilot episode for Poltergeist: the Legacy as per this article.
"I am birthing evil incarnate," she explains, "and I'm being dragged around by the demon by its umbilical cord, because he didn't quite bank on the fact that once he's out he's still attached to me. That part's kind of horrifying and scary, but right at the end of it I open my eyes and what I see is my son who died a year ago, standing like an angel. Part of me is experiencing my dead son being reborn, so it's a really interesting scene, because this extreme violence of birth is also a kind of bliss. I'm sort of in a trance."