Abdominal distention from gas and bloating and the growing uterus feel different; the uterus is firmer. By the end of 9 months, the uterus has grown enough to crowd the stomach and the intestines, often causing heartburn and gas and making it difficult to eat a lot at one time.
usually the first Dr appointment is 3 days after for a weight check. Then you need to schedule one for two weeks after birth so they can run a PKU. (they give this card info to you in the hospital) Then you don't have to go back for anymore appointments till your baby's 2 month shots.
Most pediatricians prefer to see a newborn 2-3 days after hospital discharge. This allows them to check for jaundice (yellow skin), feeding issues and weight. In some cases, especially if the infant is slightly preterm (36-37 weeks), pediatricians prefer to see the infant the day after discharge.