Yeah, the hospital makes sure to tell you a million times to bring clothes that fit when you were 6 months pregnant. A uterus is normally the size of a pear, it stretches to the size of a watermelon, then deflates and shrinks on its own timeline. Also all kinds of shifting happens so your ribs usually expand to make room for your organs that were in the space that the baby now takes up. You also lose so many pounds of water weight in the following couple of weeks. You generally go home from the hospital still looking kinda pregnant. 6-8 weeks later though and you should be back to mostly normal.