katiegirl - i did preggi bellies for a while and didn't really enjoy it (lots of flailing of arms and legs).. if you like Step classes though then you'll probably enjoy them - it's sort of like Step on a ball!! your first class is free of charge anyway though, so may as well go along and give one a go and see whether you like it... i've been to classes in Albert Park, Elsternwick and Armadale. Elsterwick and Armadale are far nicer studios than Albert Park (the classes are just held in the creche there)...
i have recently found some good pre-natal pilates classes in Brighton at a place called "Fit to Deliver" the classes are $22 for mat classes and $24 for reformer classes, and they are eligible to be claimed against your health insurance (if you have physio cover)... i think Nox goes there as well (think she might have put me onto them in the first place!!)...
good luck with your first OB appointment!! my DH didn't come to my first appointment either. i made him come to the next one though (at 12 weeks) so that Dennis could tell him to stop being such a food nazi, and i wasn't going to kill the baby with the odd glass of champers!!

Jo - i went to my antenatal classes at Cabrini recently (at 34 and 35 weeks PG i think). everyone there was about the same gestation as me (and most probably even a week or two more!!). whatever you read might have been referring to the pre-natal physio consults which are apparently available. i was never offered any, but recently found out that they're available and should be offered to you when you go along at 14 weeks to fill out your booking forms...