What a shame. I used to be turned off by pregnant women, but I have one of those car-wreck addictions to a really bad soap opera ("Passions") and until last week, there was a hot little number who was pregnant...one time she was wearing this black satin nightie, and, well, my life was changed.
I find it surprising that this is still considered a taboo thing, though. I've heard lots of people talk about pregnant sex; once in high school I even heard a group of classmates (I have NO idea why talking about how it was "healthy for the baby" and they were looking forward to it. And just the other night there was a great episode of "Mad About You" that focused on pregnant sex.