Have you ever seen super obese women? I had a friend (no longer) about 5-8 years ago that was about 400lbs. She didn’t know she was pregnant until like the 8th month. Because it didn’t show.
At the risk of being accused of having a dirty mind I can't help but wonder what kind of guy could be crazy enough...or desperate enough to....
I hear those stories too; it’s the no missed periods combined with it that I question. I also didn’t convict her, but it does warrant a raised eyebrow, at least.
You will note, that the folks agitating on this aren’t asking for a high standard of evidence for conviction, they want to make what the mother is accused of doing legal.