Hi Funyarinpa,
Good to hear more about you. I can totally relate to the feelings you have about your age right now. At that age, I too went through similar feelings of being ignored and anxiety about college etc (this was a little more than a decade ago, when I did not even know much about gender variance etc).
Don't worry, this happens to almost everyone, whether cis or trans, but it gets over soon and then we wonder what was all that anxiety about.
Regarding gender, it is great that you are already through the questioning stage and know your identity; it takes many of us much longer.
You might have already seen the information available on the FtM forums here and all the other forums dealing with different stages of transitioning. If you have any trouble finding what you are looking for, do let us know and I'm sure someone will be able to help. About finding a therapist, the ease and time taken may depend on where you are located, but don't worry if you come across someone not willing to help. Just ignore them and move on to find somebody else.
All the best
Cindy