Hiya Jussy
As the causes for RPL's can often be attributed to either Immunological,Anatomical, Chromosomal, Endocrinal causes...if your blood screens for hormonal, genetic karyotyping, immunne and chromosome tests have all come back clear, often the next step is to look for anatomical reasons as to why you have suffered repeat pregnancy losses.
-So at your next appointment expect to discuss options and possibly an Ultra sound scan. You may then discuss options such as Hysterosalpingogram (HSG), Hysteroscopy and Laparoscopy to check for things like blocked tubes etc...Usually a Laparoscopy is offered first as this is the least invasive I think of the three.
-You won't have any of those procedures until all your options have been discussed, then once you have discussed the options with your Consultant, you will get a referral for whatever procedure may be deemed necessary.
Lots of luck....Hope everything goes well!