I am 13 years old, do not have a cell phone (but have an iPod that I can communicate on), and could not make an appointment on my own. I would tell my guidance counselor about it, but even though she says it would be confidential, I don't trust her enough, I feel like she would contact them because of the topic of the issue. And I am not worried about them accepting me or anything, I just don't want them to be in my face making a big deal about it, constantly asking me questions about it.
P.S. they try to avoid taking medication as much as possible, so they would not be happy about that.