I'm sorry
It took my cousin ten years to conceive and she was on all sorts of fertility medications and so on.
Then finally one day she said she'd had enough and was done with the medications. Her and her husband then moved to Sweden and BAM she was pregnant! It was funny cuz the family didn't even want her to move a muscle for fear of losing the baby. But she carried to term and now has THREE kids!
I don't know what happened- or what's in the water in Sweden- but maybe her deciding to not stress anymore helped her and can help you?
Best of luck! I hope the doctors can figure out what's wrong.