I'm so sorry for your losses, but glad to hear you are getting some answers.
I too just went through similar testing. I did not have any results other than an 8 mm submucosal fibriod. So, I can maybe speak to the fibriod, but not the rest.
My RE wanted to have the fibriod taken out. My OB thought that since it was so small we shouldn't bother and just try again. Then the surgeon said the smallest one he ever took out was 1 cm (bigger than mine). So we are leaving mine alone. Especially since I have had one successful pregnancy.
It seems there is a lot of debate about fibriods and what to do about them, but little empirical evidence. However, the surgery does not seem to be particularly invasive, and the recovery is not too bad either. That is good news.
We saw my OB last week to talk about TTC again. I asked her if I have to have another D&C could she take the fibriod out too at that time and she said no. Apparently there is too much swelling and blood in there to be able to to that. So I can see why no one 'saw' it for you during a D&C.
I wish I had more answers for you....
Good luck and please keep us posted!