skyDancer had a very good response. I'd just like to add that finding out your gender is much like finding out your sexuality. It's not so much about what's on the outside, but what's on the inside. You sex is what you are outwardly, whereas you gender is what you are inwardly. Also, there are terms such as cisgendered and transgendered to describe contradicting and matching gender-to-sex orientations. For example, a guy who is inwardly and outwardly a male would be cisgendered. A guy who is outwardly male, but inwardly female would be transgendered (or transsexual, depending on you definition). So, what you need to determine are 3 things.
1. You say outwardly you are male, so are you cisgendered or transgendered?
2. If you are transgendered, do you want to make the transition from male to female?
and 3. How are you going to go about doing either one of your choices?
Now, when I say "need to determine" I do not mean that you need to decide right now, in the next few months or even in the next few years. Take your time figuring out who you are, and either way you go, there will always be a community there to support you, I guarantee it. Keep in mind that gender, as well as sexuality, is not just a set thing. In some cultures, there are five, even seven. My personal belief is that it's a spectrum. Maybe you are in the middle of the spectrum or more to the right or left. I encourage you to check this video out about a culture with more than two genders:
http://www.15andcounting.org/blog/2009/09/02/five-genders/
Although you posted this a while ago, I hope I am still helpful in some way. Good luck!!!!