Thanks for sharing your story, I'm in college too! Please don't beat yourself up: Lack of awareness is a characteristic of having an eating disorder.
I also see a therapist at school and I kept talking about how I felt guilty for wasting so much time, guilty for putting other people through this, and feeling anxious because I don't really trust myself to make decisions. How could I not see it?
It's great that you are seeing a therapist and want to get to a healthy weight. My only advise is to stick with the therapy. It might get hard to talk about things and do any of the assignments, but you can make progress!