I say get rid of the belly altogether and not have her be that far along in the movie. No mention of pregnancy and no birth either. (the word pregnant also makes me cringe - our real world terminology just sounds wrong in a Star Wars film. Just like Padme saying Anakin's not her "boyfriend" in AOTC).
But the main crux of it is that I hate that it's explicitly pointed out "SHE'S LUKE AND LEIA'S MOTHER. AND ANAKIN'S THE FATHER AND HE'S NOW DARTH VADER!!!"
But that's just my wish. I understand there might not be much of a movie left once everything contemptible is removed ;-)