Thanks again mummies, the lovely lady at Centrelink told me to notify child support/go through child support & they will assess additional medical requirements. So that's on the to do list. DH is coming over to help with my tax on Friday, so maybe we can talk more then about the up coming costs.
Ps I agree with previous poster, 170 p/wk is a great help, I know alot of mummies get a lot less/nothing so I am very grateful to be eligible for such assistance. I'm just thinking long term. Last financial year, DD racked up over 5000 of medical bills.