I have GERD and really struggle with it. I frequently choke when I try to swallow. I have a hiatal hernia which is responsible for a good chunk of my problems

I've had an endoscope twice, and honestly it's not a big deal. They knock you out for the scope, so you literally go to sleep they do their scope and any biopsies that are necessary and then you wake up when it's over. They keep you there for recovery from the anaesthetic for about an hour. The only problem is they want you to have someone come fetch you and take you home afterwards. If you don''t have anyone who can come get you, you can opt to be awake for the procedure, but my gag reflex is too sensitive for that to be an option.

Good luck with it.