Your core changes more than you think during pregnancy, and abdominal separation (diastasis recti) is one of the most common, yet least talked about. It can show up as doming, a “pooch,” back discomfort, or core weakness after birth. The good news? It’s not something you “caused,” and it can improve with the right support. Here’s what it looks like, what it means, and how to safely rebuild core strength during and after pregnancy.