Omg, man, what are you are going is EXACTLY what I went through not too long ago. Oh, wow. to a T, that is exactly how I felt.
It took my years of dwelling on the thoughts that maybe I'm trans to finally decided that "Yes. I an trans."
I thought about it over and and over. I always knew that if I could choose to have been born as a male, I would definitely choose that. but since I was born a girl, I thought about, yeah, I could probably live my life as a girl.
But then I read stories from other transseuxals who transitioned at ages 30, 40, or even 50. and they said in their stories how they wished they'd done it long ago, back when they first knew.
And my biggest fear in life is regret. And I didn't want to get into my 50 and realize that I lived half my life in the wrong gender. I felt like I owed it to myself to really explore this.
And I started dressing as a guy, I would have online friends who only knew me as a guy (since I didn't have the guts to come out IRL). And all these things made me so much happier. I didn't expect that. I think that's really what did it for me. If I wasn't trans, I think I would have realized it once I started trying to be a guy. but since it makes me so happy every time I put on male clothes and march out in public, I know this is right for me.
Now, I'm not saying that you're trans. Because I don't think anyone can say that for you but yourself. but one thing I would suggest is to try it, and keep thinking about it and how you feel about what you're trying, and your conscience will let you know if this is right for you. And DON'T let people get you down by telling you what you are or are not. Just ignore them and focus on what you think of yourself.
Your feelings and story is exactly like mine. I also am attracted to men. And this makes some of my friends say that that is proof that I am not really a guy.
I am not really out to my family, though, because I am afraid of how they will take it.
You said that you're 90% sure you want to transition, but the other 10% disagrees. Well I just wanted to say it's the same for me even now. When I'm alone with my thoughts, I am 100% sure I want to fully transition. but when some jackass of a friend says something to me about me being a girl or being feminine, it goes back down to 90%. They put doubt in me. and maybe it's not even me doubting myself, it's more just my fear of how people will judge me afterwards. and I ask myself, "Is it worth it?" "How hard would it be really if I were to stay as female?"
I hate disappointing people who have faith in me. which is why I haven't come out to my family yet.
It's really hard. It is a lot to figure out for yourself. I actually first joined Susan's when I was at the same place you are, where I just didn't know for sure. But the more I think about it, the more I try out IRL, the more I just confirm with myself that THIS IS WHO I AM. and I'm also going to have to learn how to stand up to people, including family, who disagree with me. I have to not let it get me down or stop me from being me.