Hi! :-)
Of course your whole situation is hard to assess and discuss right here, right now, on a forum, but we started from your question on whether you are TG or you have a fetish: giving the lack of arousal, and your other statements, I would say that a fetish is probably to rule out, but once again, like Sephira said, your introspection is very important. That, and also your eventual therapy sessions are more important than anybody's opinion on a forum or elsewhere.
That said, I would encourage you not to repress any feelings and thoughts and instead investigate into them.
Please, tell us more about yourself and how you perceive your own body: that might also help shed some light.
I hope this helps and kind regards,
Andi