I am proud of you, Shennae, for taking a difficult and important first step. And I am happy your first therapy session went so well. The important thing to consider here is that you "have" been dealing with this for many years. Understanding the reasons for your feelings and determining the next step deserve more than a 45 minute talk.
Sexual fantasies about becoming women, a need to dress as women, extreme guilt related to masturbation, gender confusion, sexual confusion, and/or dysphoria about their genitals are all quite common in cisgender males for a variety of more common reasons than being transgender. It is alarming that any therapist would jump to such a drastic conclusion, let alone give a client paperwork and encourage them to get going on hormone therapy, without taking more time to get to know them. You deserve better than that.