Do you know if it's possible to have some mild form of this? Me and my brother have been trying to work out our "digestive" issues for a few years with doctors with no success.
I can relate to the feeling of food/drink feeling like its "piling up" because sometimes I throw up last nights dinner when I'm brushing my tongue the next day.
It's something that's gotten worse as I've gotten older. I don't know if that plays into it.
For you. Red/yellow/green flags can be entirely subjective, and what's yellow for you can be green for someone else.