juniper76, sorry to hear your journey so far is not successful. I would definitely recommend to do further testing...I wish I could have done it earlier and now I have this compelling urge to tell everyone especially those who are put into this 'unexplained infertility' basket to get tests done early.

I am not sure if anyone in Brisbane does the immunological testings, hope someone will come to offer help soon. I am in Sydney. I know there are a lot of people who just fly in to see the two doctors mentioned here for consultation, phone consultation is also avaiable. My first consultation was around $180 (can't remember the exact figure but definitely under $200) and the blood test are all bulk bill so completely free. You will need to get a referal from your GP which should be quite easy and then just book the appt. The tests are done in St. George Hospital seperately and some tests are done during certain time of the cycle (ie. NK cells 7 days before AF) so there might be more than one trips, but a little bit of plan could minimize it I am sure.

Regarding treatment, Im sure there is way to work around the geographic problem as you are definitely not the first interstate patient Dr S had. At least take the first step to get the tests done so you know where you stand.

My FS said each Transfer is about 30% chance, fresh ones are higher, so anything more than 3 failed transfer, I'd think more to find out the problem rather than just single-minded repeat the same process. There is a 'numbers game' factor in there but you'd hate to waste so many perfect embyros then find out something can be fixed easily.

Good luck with whatever you decide and let us know how you go....