Spasms after VSG
Room temp water and smaller sips helped me. The instrument they stick down your throat into your stomach can irritate to sphincter muscle. This will be better in a week or two. After that you will get a different but equally uncomfortable feeling when you eat to much, to fast or don't chew enough.
People who are used to eating/drinking fast TEND to swallow more air. I had this problem for a few weeks and finally got the hang of it.
Try sitting back and straightening your esophagus to help the air come up.