Ok, I had the upper endoscopy about 4 hours ago. I am also a mouth breather having shortness of breath/lump in throat lately, so I was nervous. The good news: it is so easy! The worst part for me was the iv-it pinched a little, like giving blood, but didn't hurt. Then, my doc talked to me a little, then they sprayed this bad tasting numbing agent in my throat. Then the sedatives through the iv-next thing I know, I wake up and it's already over!
I came home and slept a few hours from the sedatives, but now feel fine-no sore throat, can't even tell I had a procedure done. The breathing was not a problem. This is nothing to be afraid of: now go make your appointments and let's start feeling better!