I'm playing it right now and just got to Batman's part. When you go into Sionis Industries, you enter the room where Joker and Harley stayed. And there's a pregnancy test in a crib that reads negative, next to the box that says "test may result in false positive." So Harley isn't pregnant.
There's also negative pregnancy tests all over the floor around the crib.
I think I'm maybe about halfway through it now, it's pretty good so far. More of the same but I definitely don't mind that.
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Gamertag/PSN-Murphiroth
"Would have liked to run tests on the seashells..."