All I can say is that it is absolutely something you have to handle slowly. Seriously, you need to find a therapist, preferably someone who specializes in LGBTQ+ issues. Check reviews online. Having that person to help guide you or listen to you go through this is invaluable.
Remember: You are who you are. It doesn’t matter what is or is not in your pants, or what your chromosomes say. You are who you see in the mirror every day. Only you know the real you, and this news doesn’t change that.