I am sorry to hear about miscarriage
. The correct terminology would be biochemical pregnancy
1) Possibly the embryo was not healthy and hence no success.
2) You can go for preimplantation genetic diagnosis
( PGD ) to select a healthy embryo and get it transferred.
3) Alternatively you can go for donor egg IVF.
4) Indian has top class hospitals where all latest technology in this field is used and infact India is hub for medical tourism and patient come here from abroad. You going to AUS will be waste of time and resources as we do everything here. If possible try once in our IVF centre in bangalore before planning AUS.
Let me know if you have anymore doubts.