Expectant moms can choose to preboard with Southwest which enables them to board the aircraft ahead of other passengers. They can choose seats with plenty of room or close to the restroom with this option. Before boarding starts, let a gate agent know if you would want to request preboarding. Although proof of pregnancy is not required by Southwest it is advisable to speak with a heal... https://airlinescityoffice.com/blog/southwest-pregnancy-policy/