@MGC Bertie - Yes, I'm really glad to have found this thread. It's so good to have others to 'talk' to about these issues. It's easy to feel overwhelmed otherwise.
I don't know for sure that immune issues are my problem but I do think they're part of it. I suspect my adenomyosis, which may have developed since I had DD (not sure how long I've had it) is also a big problem - maybe the main one. I think I'm going to need IVF to do a long down regulation to help address it.
I see you recently got a BFP? That is wonderful. Huge congrats