Really sorry to hear about your miscarriages. I would recommend contacting Foresight -
www.foresight-preconception.org.uk
Lots of people, who have followed the Foresight programme have found that they've been able to have a baby after miscarriages. You send a hair sample to be tested to see if there are high levels of toxic metals in your system or vitamin and mineral deficiencies, which could be causing problems. They then give you advice about how to eliminate toxins and what supplements to take.
The website has some useful resources, so worth a look. I hope that's helpful!