discussed this with you I think. I know there are posts on that thread which give a list of relevant recurrent pregancy loss (RPL) tests which can be done by a specialist doctor.
You can also have clotting tests done by a hematologist although they are notoriously ignorant about clotting in relation to fertility and miscarriage.
You can get all the basics done by a doctor.
You should have:-
Thyroid (TSH, T3, T3,antithyroid antibodies)
Clotting (all the standards like protein C deficiency, factor V Leiden, MTHFR, APS, anticardiolipins, prothrombin gene deficiency etc etc
Infection (ureaplasma, mycoplasma etc etc)
Autoimmune and immune factors
I wouldn't bother with a hematologist, just go straight to a specialist in recurrent pregnancy loss.