I have same pain all the time. Some times it's worse than others.
I think that all the crude up in there causes irritation and flushin g stirs things up no doubt. But, it's better than not doing it. I really am a believer in exercise to help bust up the garbage inside.
I do believe there is and inflammation component to it for me. I can only describe it as liver pain. It doesn't really correlate w/ foods - since my diet is really very clean. It may correlate w/ stress somewhat. When I take something to improve bile flow it gets a little better.