I'm so happy that you had the procedure done, and you already know that everything's okay. It's great that something that has been weighing on you for so many years is in your rear view mirror now

I think that you could definitely benefit from an upper endoscopy, if only to rule nefarious things out. Your symptoms are not responding to OTC meds, so something is going on that needs to be at least treated with prescription medication. There is no prep for it, usually just no food after midnight, and you will probably have the same kind of sedation.

I hope that the doubled dose of the Linzess helps with what seems like IBS. That's what it's mainly prescribed for (((HUGS)))
Please don't take anymore over the counter laxatives, and just try to let it do its job even if you don't poop for a couple of days.

I'm happy knowing that you and the kitties are comfy in your apartment with your new AC

I'm sorry that you are having problems with one of your nephews again. They are so unresponsive to you (((HUGS)))