Minor Pain Just Above Haval

I have been noticing a minor pain just above my belly button.  Slightly to the right.  It comes and goes through out the day.  Feels like I pulled a muscle or something is pinched.  Hard to explain.    I have an appetite, but I don't eat near as much as I used to just a year or so ago.  I figured I would have lost my belly weight (looks like a beer belly and I don't drink beer) since I don't eat as much, but no change.  My bowel movements have changed a little lately and I feel bloated from time to time also. Right now, I am taking a dietary supplement for deiting and detox.  My bowel movements have become more regular like they were a few months ago, but something still doesn't seem right.  I still feel bloated, gasy and now I am tasting more acid than ever.  I did have my appendix taken out, but that was 3 years ago. NO complications...   I wonder what is going on?!