Is Leo okay? Does he need their waterbottle?
I think you may be Demigirlflux. As for the pronouns, I think you can use whatever pronouns that suit you best, even if that gender never existed before.
https://gender.wikia.org/wiki/Demigirlflux
I think you maybe genderfluid, because you said that you sometimes identify as male.
I think you may be boyflux, demiboy, or maybe genderfaun.
https://gender.wikia.org/wiki/Category:Masculinity
There's a whole category on those
While it wouldn't be the official flag, yeah, I think you can make your own flag. As for the boyflux flag, I think you can use it, but it might be confusing for some people.
Yeah, what Lemon Meringue said. I hope you can be able to find out who you are.
And remember: If you feel really uncomfortable, ask someone you trust and you know can help you.
I think you may be girlflux or Genderfluid