The pain has gradually receded about a week now since it started. Good to know that it is a fairly common reaction, even though it is not listed as a common side effect anywhere. I went through that FDAs PDF that I found somewhere in the blogs, and even there the best match is “abdominal pain” which is such a broad term that can mean so many different things.
I too would like to think that its due to my liver adjusting to a new and better reality.