You think about everything that's going to happen. You're going to lose everything that makes you female, everything you loved about being female. Once you get the procedure everything you loved about being a girl will be forever gone.
You think about the stuff you'll lose. The most prominent thing will be your vagina. You'll never have sex, possibly in your life. You wont ever be able to do all the wonderful things with someone that you wanted to someday. And without sex organs you won't even be able to masturbate.
You think of how much it'll suck, masturbation feels so great, you can't stand the thought of not being able to enjoy yourself that way. It'll be so frustrating getting turned on and having those urges but with no realese.
You realize this is your last chance to have one more orgasm before everything is gone. You rush into the bathroom and start touching yourself one last time.
This is it. You stick your fingers up you vagina and start rubbing your clit. It feels so great, you can't help but think of how much your going to miss your pussy. You keep stimulating the folds of your womanhood while feeling your hand deep inside yourself. You can't believe it'll all be gone soon...