Me too. I've always been really spiritual though. Not religious - in fact, many religious people would probably call me a heathen - but spiritual. Sensitive. TOO sensitive.
I used to be as shy as you are, but because of life experiences am not really at all anymore, except for rare individual cases of social anxiety. Still, I can relate to you with my younger self.
You might be more creative than you think you are...
However, I don't necessarily relate to you on everything you said, but then again all INFPs are not exactly alike. It's just a general assessment of your dominant expression preferences, not the essence of who you really are.
I've questioned my type,too. Except my main question is INFJ (which I have received on tests) and ENFP (which I have also been suggested once or twice). But people on here keep insisting that I seem like an INFP. Then again, they don't know how I am in real life, though.