Who diagnosed the depression? Can you go back to this person and tell them what you have shared here? A college advisor may be able to point you in the direction of someone who can diagnose you. A family doctor may be able to help. Reaching out here is a good start, but you need more help.

Your thoughts and behavior are drastically affecting your sleep. I have gone though times in my life where things have prevented me from sleeping. Not sleeping only made me feel worse. I never realized how important sleep was to me until it was taken away. You need to get this taken care of. Let us know what happens.