I guess so, but how can you justify cutting from the scene when she's about to pop another one out? Lol.

I'd say there's a difference between things that most of the characters aren't privvy to (which would be the case if she gave birth after the events of the film) and the director (or in this case, the editor) deliberately keeping the viewer out of the loop, whilst every character involved would allegedly know she gave birth to twins.

Hard to explain...it breaks immersion that way by consciously keeping things from the viewer, rather than the birth of the son being a secret 'in-universe'.

Not sure I've explained myself very well there. *I* understand it anyway :p