Hey Kendra,
From my experience, being open and honest with your spouse is simply the best thing you can do for yourself and your marriage. Like everything else in life, the most rewarding parts come with costs and, at least for me, confronting this with my wife hasn't been an easy road. The good news is that, after some time and a fair bit of pain and tough conversations, it has brought us to a new fantastic level that I can't believe is achievable without full honesty and disclosure. Opening your most vulnerable parts to scrutiny, and quite possibly rejection, isn't at all easy. The idea of accepting, supporting, helpful spouses isn't a pipe dream, but I think you should be ready to put in a lot of emotional energy as well if you want this type of results. In my opinion, gender diversity is such a foreign concept to the general population that it takes some time to understand. When you factor in that your spouse will likely be quite shocked and wonder what this means for the future of herself and her child, I would expect this to be a tough time. That being said, I think that is a better road to travel than to have here find out on her own. Best of luck to you and please let us know how things work out for you.
Ameli