What we really need is to hear from several women who've discovered their pregnancies when they were delivering their babies, especially if they'd had previous babies like your patient. WHAT WERE THEY THINKING? They're the only ones who can tell us. And I really want to know, because I totally don't get it. I'd heard about this before, but I had no idea it was so common. I thought it had happened, like, maybe once in human history. How could anyone possibly not know? How could the woman's husband not know? Tom, for the sake of all us inquiring minds here, please winkle that woman out of her flat (you know where she lives) and interview her for this blog.