Do you think its an ulcer/reflux? I have a myriad of stomach issues and what you are describing sounds like what I had - hollow feeling in the same region, nausea which felt better after I ate but then returned shortly thereafter. Turns out that I had h-pylori which is the bacteria that causes ulcers and reflux. I went on antibiotics to get rid of the h pylori and nexium for the reflux and it went away. I would see a GI if the symptoms persist.