FloatyGimpy, I’m reluctant to share this because I don’t wish to frighten you - if I am out of line, please know I mean the best. As I said, I don’t tell you this to frighten you - but mean it to help arm you with knowledge.
I am not a doctor, but I suspect they will find a hiatal hernia - but be sure to ask them about what I am going to relate.
I had this problem most of my adult life. I would wake up each night choking on my own vomit.
If I emptied my stomach, I could sleep, otherwise, I would be up all night.
In 2003 I was operated on for a hiatal hernia.
In my case, the esophagus was too short. Since they did not spot this, they did not operate correctly. In my case, the operation made things much worse. In the first two days the sutures burst and they operated again.
After I was released (24 days in ICU) the hernia came back almost immediately and even emptying my stomach would not permit me to sleep.
Several operations followed trying to fix the first operation. Eventually my stomach perforated. (I begged God to take me home, it hurt so bad!)
Emergency surgery that lasted 10 1/2 hours and I came close to passing on more than once.
They took the stomach out of the pipeline and now my esophagus is attached directly to the small intestine.
I hope this is not what you have - and hope your process goes much better. The surgeon who eventually fixed me up said that my case is not so common, so many surgeons won’t know to look for it.
Also, ask them about Barrett’s.
Please forgive me if I have caused you undue stress before your procedure.