I had one..most of the pain was in my lower back and mine eventually ended in an epi and c/s for other reasons too..... check out this link lots of info and the exercises on the spinning babies site are great too ...good luck!!!

Breech and Posterior Babies - Links & Resources

Oh I found the bath fantastic and at times massage of my lower back..some people like the heat from a shower head... i found it too intense though. You're lucky you know early so keep up the good posture techniques and exercises on these sites!!