I'm apprehensive about trusting my memories as far as feeling male go. It's a well known fact that our memories are coloured by the present, so I'm afraid of remembering inaccurately.
I am positive that I identified strongly as a female at ages eighteen and nineteen at least.
But I recently remembered something that I am also positive of. When I was an young teenager, I did wonder if I was male. I mean, obviously, I had a female body, but I thought it might also be a male body. I was too embarrassed to ask though, so I kept it to myself. I had no problem with it. It was just embarrassing to talk about that kind of stuff. I later confirmed that my body was acting normally for a female. But I do know for sure that I did think I was also male.
I don't trust any other memories and I don't know what to make of this.