Sorry you are feeling so overwhelmed. (And welcome to the boards and thanks for posting about yourself!)

I would print out your post above - and take it with you to the appointment. We cannot get the help we want and need if we dont tell the therapist/counsellor what all is going on with us.

The fact that you were fine all summer, could give them a good clue - separation axiety comes to mind. Also, perhaps performance anxiety. Being tired, crying spells, wanting to isolate certainly fit depression. I really am glad you have an appointment !

I hope you will post here, people are really supportive, and there are others here who are in college.

I wish you the best, and hope to get to know you better!