Stealth/cryptic pregnancy?

Rachel
Several times in the past week I've had intestinal gas bubbles that feel like baby flutters. I was wondering what caused them, so I started digging around online (and fell down a rabbit hole lol) and came across several sites about stealth/cryptic pregnancies....I really wasn't sure what to make of that information....have any of you heard of or experienced this? I'm very curious...the info I found says it happens in 1 out of 452 pregnancies...