PS - what i should have said above is, that I don't believe diabetes causes infertility directly, but auto immune issues can and do!! Diabetes is caused by an underlying auto immune issue and there are increasing links and research stating that immune issues can/are causing problems in conceiving and miscarriage. That doesn't mean that every person with diabetes or an auto immune disease will have trouble conceiving though!!
I honestly believe that these tests and immune treatments will become protocol within the NHS in a matter of years. There is so much more to learn, it is fascinating stuff. I have read a brilliant book called 'Is Your Body Baby Friendly', by Dr Alan Beer. He is the man behind the Chicago Tests. Such a good read, i would highly recommend it...
http://www.babyfriendlybook.com/
Em xx