i have constant dull pain over 5 months+ at exactly RUQ.
at the beginning, they told me it is liver inflammtion and my liver enzymes were high in fact. later on, liver inflammation and enzyme levels became normal but still that pain. i have a lot of gas and bloating and pass excess wind. maybe, that is causing the pain. my gastroenterelog was not able to find the problem and says simple it may be ibs. however, i do not think.
my suggestion is try to find good doctors. do not forget that most doctors are really weak in their jobs and/or they simply do not have enough interest. as a result, most of the time they just wait you to go when you visit them. this is my observation after many visits to many doctors. most of them are really stupid, believe me!!