@susbo so interesting! I had two kids pre-jpouch so I was fascinated about how my third would "fit". In my experience you might just have good luck and good muscle tone. My third was my smallest but I showed just as dramatically. As a first time mom, I was visibly pregnant by 12 weeks so I think it might just be genes. While it was cute while I was pregnant it did some major muscle damage to have them all jetting out like that I just got repaired.
@courtney28 congratulations and ENJOY!! I had two full-term pregnancies before my j-pouch and really did not notice any dramatic differences between the experiences. My nausea was worse with my third though it had gotten progressively worse with each pregnancy. I think at @susbo has had vaginally deliveries (if I remember past posts correctly, if not there is definitely someone around here). Delivery method probably become a topic of discussion and decision for you and your medical team and I honestly found it very stressful (I over thought a LOT). Do your research, go with a doctor you love, and trust your gut. Congratulations!!!