I am sorry to hear about this.
There are a lot of reasons for abdominal distention. If it is related to eating (e.g., wake up in the morning flat, then look pregnant after any oral intake), then a gastroenterologist needs to be involved. If the distention is only on the left or right side, i.e., asymmetrical, then that may be due to nerve damage at the spine level. If there is a history of pregnancies and weight gain, then diastasis recti is a possible contributor.
Some of these are correctable problems. A CT scan can help with the diagnosis.