No... I doubt there's any time for him to play with the kids. He probably isn't there when they're born, I wonder if he even sees Luke (I hesistate to say he knows there are two). But that doesn't mean he does not see her pregnant. And no she was not pregnant in the cartoons visually, besides that would be far too early. I'm surprised that so many people don't know something about this... Natalie Portman, George Lucas, Rick McCallum, Trisha Biggar have all said something or other about her pregnancy. It's not even really a spoiler anymore as Natalie and George have both commented to the general public about it.