Oh, it's perfectly possible and reasonable - as long as gender is involved, people often get confused and cant figure themselves out, especially, since everything and everyone around them insists that gender is fairly easy and straightforward - one should either fall in one box or another. If we all could understand ourselves and figure this all out "oh so simply" everybody would transition before their puberty (as long as they would live in supportive environment). Also, one could be aware that notions like "transgender", "transsexual", "bigender" and other exist, and might even relate to them but still be fairly ignorant or simply afraid to learn about all details involved. So, one would be aware of being trans, but not fully realising what it means and what consequences it may have on one's life. Hope that it helps a bit 🙂