It takes you a few moments, but then you realize what that feeling is you’re having, arousal. Giving away your sexual organs. Becoming a being unbound by gender. It turns you on immensely. You watch your new self in the mirror of the post-transfer room you are staying in alone. Just seeing the flat crotch that once held the entrance to your (now also gone) ovaries.
In your wildest dreams you never expected that emptying your sexual parts to the first stranger you meet could be so fulfilling. Your whole life you were always bothered by your flat breasts and weird clit. Who would've thought that the easiest solution of just giving them away was also the best one. You resolved to thank Alex for taking your femininity.
But first there’s another thing you immediately want to try. You move one hand down to your crotch and start rubbing just below your pubic hair. Maybe it's just a placebo, but you’re receiving immense feelings of pleasure from down there. Potentially even more than from sticking fingers into your vagina. Your other hand goes up to your flat(ter) chest and you start pinching and flicking your already erected nipples. Again it feels like they're more sensitive than before, potentially because of the reduced fat.
Soon you reach the climax. But due to your lack of sexual organs it instead reverberates throughout your whole body. You can't help but let out a few moans as your mind is assaulted by the strongest orgasm you’ve ever felt in your life. As you sit there panting and enjoying the afterglow, you notice another advantage of your androgyny, you stay dry during orgasms. You can now masturbate wherever you want without leaving any evidence behind. As if you couldn't appreciate your new body even more.
After you recovered enough, you decided to leave the room. You don't bother putting on any clothes, because there's nothing left on your body to hide (aside from maybe the blush that walking around technically naked gives you). You don't have any destination in mind yet, but you feel like nothing can ruin your great mood.