(circa Y2K) "translesbian" would have been appropriate in most transgender chatrooms. I called myself one until I discovered it was fun to flirt with the lonely boys . . .
The possibility is you are transgender but that would require you to confide in a doctor. I am the same way, having known I was really a girl from a very young age but back in the 50's and 60's nobody really knew about "Transgender people". The first time I could put a name to it was when I read about Christine Jorgensen having a sex change and then tennis player Rene' Richards,
A long time ago "transgender" was coined by a crossdresser basically to mean crossdressers, transvestites, sissies, drag queens - anyone who wasn't a "transsexual" (someone actively transitioning). Today words like "transsexual" and "transvestite" are virtually slurs. It's impolite to ask someone like Caitlin Jenner what stage of transition they are at. So we're all "transgendered" now.