Britney,
sorry to say I have some experience in that area. I was dating a girl and told her two weeks in that I was a transgender. She immediately accepted it, and though there were some bumps here and there, we were married a couple years later. After the marriage, the trouble started. She wasn't so understanding and started to worry about what other people would think, (ie wouldn't go to the Dr. with me for fear of them thinking she was a lesbian).
Even though you love your wife, she married a person she believed was a man. For her to stay with you during and after your transition would require her to accept a lesbian lifestyle. She may not be ready or willing to do that.
For some people, love is above all something that comes from the soul. Nothing gets in the way of it. Not loss of body parts, sexual function or, transitioning. For others, body image is an important condition of their love. Its not for me to judge if that is right or wrong. It just is.
You need to sit down with your wife and have a serious talk about what your transition is going to mean to you, her and your marriage. If its not something she can handle, then the choices are either not transitioning or ending the marriage. If she is willing to try, counselling is in order. Sometimes it takes a while for the gravity of telling someone you are not the gender they thought you were to sink in. First reactions can be just about anything. Acceptance, anger, betrayal, disbelief. Regardless of which way this goes, get yourself into therapy so that you don't wind up suffering any more than you have to.
Good luck and Godspeed.
Sam1234