Remmy, your story sounds nearly identical to mine. I always played with the guys, and when I did play with the girls, I would play a masculine role in our little make-believe games. If I couldn't, I simply refused to play with them. I remember that up until the age of seven, I would wish on my birthday cakes that I would wake up a boy and everything would be okay. When I realized that it doesn't work that way, I was completely and utterly devastated.
I went through a lot of grief and depression before accepting myself as FtM, including a 2-3 year phase where I denied being human because I just hated being in a female body so much. So for the longest time, I truly believed I was a wolf trapped in a human body
I'm not quite sure what made me realize that I am transgendered, or what exactly was my wake up call. I think it was a conversation my friend and I had, and we somehow got on the topic of how fun she thought it would be to be a boy for a day. I guess that suddenly made everything click or something, because I immediately thought, "I wish I was a boy everyday,"
and from there I began to question everything I ever knew about my gender, and things from my childhood began making sense. Now, everything Is just starting to unravel, and it's truly a frightening and exhilarating experience.
I think the most important thing though, is realizing that there's no right or wrong way to be transgendered. There's no set defined rules. A lot of it comes from the inside, and no one can tell you what gender you are except yourself.
If you need anyone to bounce questions off of, or just talk to, you can PM me since I feel like I just came out of that questioning phase, so a lot of the experiences I've had are still fresh in my mind.