Thinner women also tend to pop sooner, since their stomachs are smaller. The more kids you have, the more likely you are to pop faster, since the muscles that make up your abdominal wall are a little bit looser thanks to those previous pregnancies, says Kallen. Plus, there's a good chance you're not seeing her every day to notice gradual changes, and that's why it seems so sudden. You might think your friend has just started showing, but she could have been really sneaky at hiding her belly (peasant tops!). That being said, the pop doesn't necessarily happen overnight, even though it can appear that way. “At this point, you may start to feel-and even see-your pregnant belly pop because it’s no longer hiding behind the bony pelvis,” says Kallen, who adds that this typically happens at around 10 to 12 weeks for most women. Here’s what’s going on: As the uterus expands with the growing fetus, it rises above your pubic symphysis-a.k.a the place where your pubic bones meet in the front of your pelvis.
