Yes.
Sex is not the same as gender. Sex is male or female, or some sort of in between mess. A **** up, you might say. Gender is a spectrum and does not always correlate directly with sex.
Uh... yeah. That's exactly what gender is. Congratulations on both understanding and not understanding the problem at the same time. You've achieved a non-binary understanding of non-binary gender.
No. Gender dysphoria is, if you can't reconcile your gender with your sex or sexuality, but that's not the same thing.
Big who cares.
Gender is a psychological and social issue, not a biological one. Biology doesn't get a say.
It doesn't affect you or bother you, but you're not happy about it. Awesome.
I never said I wasn't happy about it at all? you know what they say about assumptions, right?