I've have had bouts of this pain off and on. It is not common for me to find posts discussing it. I don't even find that many doctors really know what it is. When the problem arises for me, I find it not only very painful, but awkward to talk about and cope with.
I was treated with valium and short bouts of physical therapy. The only PT I found who treated for this was NOT covered by my insurance and I could not afford long term care. I went when I had a bad flare and did get some help with PT...went about twice a week at times.
I also found heating pads to be a little helpful (lower abdomen). In addition, my doctor was willing to give me a small amount of a strong pain reliever to take if absolutely necessary.
Everyone is different, but I would consider trying a heating pad to see if it gives a little relief...something to add to your treatment plan.