I have been trying to conceive for many months now and I have CIE. I'm not sure if it's the Ichthyosis that has anything to do with it, but rather that some couples just take longer. I've done my research and it is the norm. for it to take 6 months - 1 year. Of course there are the women that get pregnant first shot out, but that isn't the norm.
What I have started to do is really get my health inorder. I'm trying to get more sleep (which I've read that lack of sleep can inhibit fertility), exercise regularly, reduce stress (really getting into yoga lately) and now focus more on nutrition. I think the skin overall works so hard for us that it has to be in tip top condition so that the body can go off and handle other things (pregnancy).
I've read on this BB about tons of other women having healthy babies, so I am not discouraged that having CIE will inhibit that from happening for me and I wouldn't worry for you either. And unfortunately miscarriage is all too common with many women, so I wouldn't put that on CIE either. I'm sorry for your loss, however.
Besides what I've written above, I don't have any more advice, but if you want to talk more, e-mail me.
It doesn't seem fair that for all we go through daily, that trying to have a baby is equally difficult. Don't give up, though. For all that you are doing to conceive, you'll be a wonderful Mother.