I'm sorry that you are so uncomfortable all the time. I know that you are worried, and frustrated (((HUGS)))

Here is a link to a page that has suggestions about things that can trigger IBS symptoms, and some things that you can eat that may be easier on your stomach:

IBS Triggers and Prevention: Irritable Bowel Syndrome Food to Avoid & Triggers

I think that it's a good idea that you postponed the upper endoscopy. You just had the colonoscopy, and that was very stressful for you (((HUGS)))

I'm so glad you have your AC.
What book are you reading now?