Transgender, genderfluid (Thanks, Susan, for the succinct lexicon I just read again).
I preferred he/her/hers shortly after walking through Susan's door for the first time right at a year ago (he/him at signup).
I was confident my trajectory was headed towards she/her/hers when I began HRT last June (Estradiol only, no T-blockers because of my health and age according to my provider at PP). And the estrogen certainly seemed to make me feel more in alignment with my female self (I suspended HRT after several months because of subsequent health issues but hope to resume).
All that being said, I have decided to retain current pronouns (he/her) because I frequently 'regress' to my male persona. I've spent much of my time on Susan's attempting to resolve this dilemma because I really, really want to be a woman and to look like a woman. I no longer trouble myself with doubts and details regarding my gender. I'm happier when I feel like a woman but have come to terms with also being a man. My favorite current theory explaining my genderfluidity is the 60 years of gender role scripting to which I fanatically adhered for more than 60 years (thanks TanyaG!). It was naive of me to believe I was going to get all that worked out in a year.