I have used counseling services at 2 of the colleges I've attended. The first did not offer glbt-specific services, but the second, University of Colorado Denver, did. I was already well into transition by the time I saw my therapist there, but she was one of three or four student therapists they had there who specialized in transgender issues. Depending upon your school and where you live, you may get lucky and find someone who can help you out.
Otherwise, I'd recommend Planned Parenthood--- their locations in the western U.S., at least, typically have trans-specific services. That's where I was prescribed my first testosterone.