Powelly I'm so very sorry to hear of your losses. Its so very difficult to know what to do as far as testing goes. I've just lost my 6th little angel bub and I've had some testing done previously. I'm actually going to see my GP and talk to him about seeing someone who really specialises in miscarriages(instead of just my Ob/GYN to try and work out a plan to sort through my 3 known issues that contribute to miscarrying itms. I did see a specialist in Sydney(Dr S) who is very well known by lots of women on BB but he really didn't come through for me when I lost a baby back in March and I'd seen him just before and during that pregnancy but feel that maybe because I'm not from Sydney that might have contributed to the way he dealt with my loss...or lack of help.
I'm a little unsure whether or not to see him again and get more testing done through him or whether I'd be best off finding someone else here.

Anyway if you feel you'd like to have some tests done the by all means do that hun. I say knowledge is power in these circumstances.
Good luck with whatever path you decide to take