Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. The problem you said looks a bit complex and needs more detailed evaluation. There can be so many causes for this pain and can t be said for sure but the following few may be of more consideration. The enlarged liver (fatty liver can be the cause ). Other include functional disorder of the gall bladder like sphincter of odd dysfunction , there is another thing called post cholecystectomy syndrome that s also need to be considered. IBS some time give the same. The list of causes in not exhausting and there are many more. A polyp somewhere else my be a cause. The good thing is that if it s from such a long time its doesn t seem to be a very serious issue. The best option would be u see a gastroeneterlogist and keep in touch with him.hopes some solution is sorted out. Hope I have answered your query. Let me know if I can assist you further.