Thank you so much for your support and acceptance.
Since I posted this it's been really weird. I'm opening up to myself more about it, and realizing more and more that this is who I am and this is what I need to accept. I realized that I can't do any of this without a support structure behind me, so as terrifying as it was, I came out to some of my friends. Their responses were overwhelmingly positive. The first person I told I was so scared and upset that I just kept crying. Then I told another friend of mine over text. Their (I'm using they/them pronouns because they're genderqueer) response? "Whoa." Then after we had a quick dialogue about it "Well I support you in whatever you choose to do and think its awesome that yr coming to terms with that. It takes a lot of ->-bleeped-<-in courage." I made the mistake of telling some kids I used to be friends with in high school. That was ->-bleeped-<-ty as hell. All of them were members of the allies club,so I thought they'd be supportive. One thought it was a joke and when she realized it wasn't got incredibly cold about it. The other 2 made a really inappropriate joke about it and quickly changed the subject. The day after all of that happened I told another friend of mine, and she was happy for me. When I told her how afraid I was, she said something that describes it perfectly. "Nothing's changed but everything's different." After that it got way easier and way funnier. It was less of a thing to tell people and the responses were things like "congratulations!" or asking me what gender pronouns I want.
I'm still terrified, and telling people made it worse. I'm happier now that people know and I know that I can count on them, but it's also scary because there's no going back now. There's no more trying to hide it. There's a since of finality. From here on there's going to be no return to "normal" as I once knew it. The doubts continue to gnaw at me, but I also caught on to the fact that even though I know that gender is a fluid concept I keep trying to turn mine into a binary and using the feminine aspects of myself to try to pretend that I'm not a guy.
I'm starting to really look forward to things that are completely normal but now different. Like I'm going shopping today specifically so I can get mens' jeans. I had money set aside so I'm buying a binder so I can see what it's like to go out without boobs.