Liz, I totally understand the overwhelming feeling. In our youth, many of us heard about the few, rare cases of people who had 'the operation', and it seemed like a dream, something we all longed for, but which looked utterly out of reach. This thought of 'being right', becoming ourselves seems to linger in the back of our minds no matter how hard we tried to suppress it.
And now! Now, finally, after so many years of internal pain, self-denial, and even self-loathoing, to be told it's OK, to be offered our dreams, well, that is something far beyond what we hoped for all those years.
Some days now, I want to stop riding the whirlwind, stand aside, and just contemplate what on earth has happened to me! But, it doesn't stop, so I hang on, try to look ahead, and take each task as they come.
I know this is right for me. I bet if you look deep inside you'll see your answer as well, there beyond the nervous doubts and chaos of what-ifs.
You need to be true to yourself, your authentic self. That is more important than anything else.