Against my dr's advice and my better judgement, I started drinking A LOT of soda about 6 months post op. It's probably not my only bad habit to hinder my weight-loss, but I believe the return of this old habit gave me the stupid "red light" to return to other unhealthy eating habits. Be warned.
As for my capability to drink carbonated beverages, the gas as a result is no fun. Especially in a social setting. Often I did have pain as a result too. The worst is Diet Dr. Pepper, sorry.