Hi Kimberley!
As the others have indicated, it is hard to know what will happen when you tell your wife that you are not the person she thought you were.
All I can do is echo the sentiments that honesty is the best policy, and to keep assuring her that you love her. Be patient, and try to let her express all the things she feels, no matter how much her words may hurt you. In the end, she may be okay, she might not, but that will be for her to decide.
My ex was very liberal and supposedly very accepting, but since I called her my ex, I guess you can guess that things didn't go as well as I had hoped.
Still, I did the best I could by her, all things considered.
Many safe cyber hugs for you, and lots of positivity for you and your family..
Good luck!
Missy