I do not know anyone who suffers from this particular phobia, but I want to tell you that you write about it very poignantly; you needn't worry that people 'won't understand", because I understood, just reading your post.
It sounds like you are a very bright young person with a lot of potential; you've been through a lot of things that no kid should have to go through.
But you've survived, and I am confident you are going to conquer these phobias and be okay. Actually, even better than that.

Best wishes.