Pain - constipation..straining? Did you stand up too fast & get light headed?
Did you mean the OP?
If not, then:
Overactive digestion, higher up than that. Trying too hard in the MIDDLE of my abdomen. Not necessarily painful. Feels more like nausea but not really in the stomach.
Citrucil once a day fixes it (WITHOUT causing global warming, unlike a more-famous product of the same nature) Or popcorn & fizzy water, but my DENTIST doesn't like me to eat popcorn.
Of course, the fix has a 1-day delay. I suspect fresh apples would help but then I'd have to find out where the cats chased them to.
The problem was always there in my family, but
vaping makes it worse for 2 reasons:
1. Mild dehydration
2. Combustibles deliver a very fast dose of stimulant AND a very bitter flavor at the same time. That kick-starts digestion. When people smoke after meals, it acts like a "liver tonic" because the bitter taste tells the liver to release extra digestive enzymes in response to possible mild poison. (Like you got an iffy plant mixed in with your meal.) So your body eventually learns to not bother to release the usual amounts of enzymes because it knows you'll smoke and get that enzyme kick-start at the end of the meal.
Quitting smoking means you abruptly stop getting the artificial enzyme trigger from bitter flavor, but your tummy is still expecting it. So, insufficient digestion for some people.
A traditional European cure for this is to take a drop of "bitters" after a meal. Most European countries have their very own, local, after-dinner drink that tastes really horrible, but which everybody in that country developed a taste for because it aids digestion. Or, you can "bitters" as an extract w/o alcohol and dropper some at the web between thumb and forefinger and lick it off to get the "liver tonic" effect.
BUT, I figured out that France and Italy, at least, would rather keep their wine nice-tasting by leaving the bitter herbs out of it, and eating "gourmet" olives instead. The bitter kind, like Kalamata or any of the other weird gourmet ones, not the canned black ones that every kid puts on all their fingers at Thanksgiving dinner when the grownups are not looking.