I Have Been Having Issues With My Digestion/stomach. A Couple

I have been having issues with my digestion/stomach. a couple of years ago I had my gallbladder removed and the symptoms seemed to abate for a while now they are back but of course I no longer have a gall bladder which could be the cause. I feel full when I haven't eaten sometimes. I eat small amounts and have discomfort and feel nauseous. I have been trying to limit food intake at one setting and have change to eating up to five times daily. It seems like when I eat anything with any spice at all I have more pronounced symptoms. I have lost some weight as a result but am still in an acceptable weight range. I am not a couch potato so inactivity shouldn't be a cause. I have recently seen a heart doc and been given a clean bill of health. Also have seen gi docs to no real solution. Any ideas what I may be experinecing