I`ll let you in on a little secret here, 95% of the time I feel Agender too!
I know I`m female, and I`v never felt male, but mostly I`m quite neutral in my head and the thought of gender just doesn`t feature in my everyday life, it`l like Im just Me (whatever that might be).
I`m also Bi, but apparently that has nothing to do with it.
this is going to make no sense at all to anyone except me perhaps, but inside I feel like an Agender natal female, though all of my external appearance and actions to the outsider screams `Girl!`
and you know what? I couldn`t care less, because I like it that way!
Just be YOU!