Yes, IBS sucks. I have had pains in my liver area. Sometimes it moves and I'll feel in on the other side of the abdomen. Sometimes I get pains in my back. Sometimes it is dull, sometimes sharp, sometimes it is a squeezing pain. The more I think about/notice it, the stronger the pain becomes. If I am distracted it will lessen or go away. A couple of times it felt like my entire large intestine was burning.
Relaxing helps. Also, I have bad bloating and I think that interferes with me taking normal breaths. I breathe too shallowly and I think that causes some problems due to hyperventilation. Look that up if you ever feel short of breath.
Probably lots more to discuss, but that's what came out for now.