Try upping your intake in dairy like products. I've had thrush too (I'm 17 as well) And thrush tends to go away by itself. It won't kill you.
Talk to your parents?
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.