When I press on the left side right below my last rib on the left side, it feels weird. Not painful or anything, but almost like pressing on one of those pop caps on glass drinks. It doesn't happen on the right.
Its hard to describe. That area also feels distended at time, but then that aspect could be my imagination.
A bit more on the exact location of the feeling: if I run my finger directly down from my left nipple and press as soon as I reach right below my rib, thats where the feeling is most prominent.
Could be stomach or upper intestenal tract. I agree, see doctor and maybe have some intestenal tests done, When does this seem most promonient? After you eat, etch. You want to make sure you check for ulcers too.