I can confirm, I just had two male pregnancies in my Isla Paradiso Bunch videos. Both males got very fat and the second they gave birth they were skinny little things again. But they get fat all over their bodies, as the pregnancy advances they get fatter in spurts.
I don't take many screen shots while I'm making videos but I do have this one which isn't totally clear. Craig is lying on the floor, wearing the black and red shorts. He's very pregnant.
https://i.postimg.cc/FHHFXvRq/Bachelorette-Party001.jpg
The shorts are something the game put onto him.
Found a better pic of Craig minutes before he gave birth.
https://i.postimg.cc/3NGys5wg/Pregnant-Craig001.jpg
In this pic you can almost see Craig from behind. See how skinny he is usually. Well he went from fat to skinny instantly the baby was delivered.
https://i.postimg.cc/ZRVs1ZTg/Bertie-Birthday005.jpg