Hahaha, can't say I don't feel like I shouldn't have a name at all, but I completely sympathise with you on the "nothing suits me!" front. Personally, I think I'm just too worried about finding a name that really fits me; most people, when finding a name for a new baby, have no predefined conceptions of this person, they don't yet know them, so they can just pick a name that they really like and the child kind of grows into it (if that makes sense). For trans people (and anybody changing their name, really) I think that there's a lot of worry and stress about finding one that suits them, the way they look, personality etc. I don't know if anyone else feels this way, but I kind of feel like I'm going to be heavily judged for my choice of name... so I need to pick one that kind of appeases the whole planet rather than going for one that I like!
I have no idea if any of that made sense, I'm just kind of waffling! Sorry it doesn't go much way to solving your problem... it's probably not much help, but after an extended period of using a name, you (and everybody else) WILL get used to it. You shouldn't rush yourself at all, naming is an important process and you take as much time as you need to find something you feel you can live with comfortably. A name is for life, not just for Christmas ;]
Have you tried using any of those baby name generators that are floating around online? I've had some really awful suggestions come out of them, but they might be able to give you some inspiration :] I can't post links, but if you google "baby name generator" there are quite a few that come up! Best of luck to you!