Wasn't familiar with this, so googled, and found this:
http://en.wikipedia.org/wiki/Symphysis_pubis_dysfunctionsounded similar?
anyway, reading it, i wonder if my problems in the pelvic region are not "just" SI inflammation? as some of these symptoms sound familiar.
anyway, it gave a list of things to avoid, if this is the problem you are having?
also, reading gave me the idea that PT might be useful. I went to a PT that specialized in women's issues especially down in that area.
they mentioned core strengthening and pelvic floor exercises? don't know if that would be useful.
i've found there are a number of movements i have to avoid, some that they mention. always assumed it was my SI, but who knows.
i've also found that when i flare in the pelvic area, lots of ice and rest and time, or a short course of steroids along with a lot fewer days of ice and rest.
maybe you'll find something useful in this. don't know, but thought worth a shot.