I saw a fantastic Physio in my first pregnancy. She specialised in Pregnancy and cured me. I had the beautifully named pubic symphysis dysfunction which may be a bit different from what you are experiencing, and also cronic lower and upper back pain. To say she cured me is not an understatement.I was in agony and could barely walk or sit or lie down. It was awful. I have had no similar problems this time around thankfully. Are you in Sydney? I can look up the name of this physio, think she was in camperdown near syd uni. Can't quite remember her name but sure I have her info somewhere in last pregnancy stuff. Good Luck