Ive had this same issue.. except now I'm actually trans (ftm, as well as genderfluid) so I get where you're coming from. Maybe you could be bigender? I had sat with that label for a while before I noticed i was trans.
Textbook definition: Bigender is a gender identity in which people experience exactly two gender identities, either simultaneously or varying between the two. While it originally referred to individuals who identified as both male and female, the term bigender now encompasses the pairing or grouping of any two gender identities.
While I was questioning my transness, some people told me that I could just be in denial about it. Maybe this is your situation? There's also demigirl which is not fully identifying with being a girl, if that sounds like you?
Im not sure if this helped at all but I just wanted to see!