Hollo, are you near Ashgrove? Revive there might do it - they do yoga and pg pilates I think (they do at the city one anyway), so they could be worth a try. The physio from the Wesley does special pg classes which are a combination of pilates and yoga at the Wesley also. If they don't suit, perhaps ask your care provider or maternity hossy if they know of anywhere. There is bound to be somewhere.

Also, if you find somewhere, can you update to let us know? I know this one has been asked before.