aw. yeah, depression comes in cycles for me, as well. college is a big change for you, as it is for everyone. completely changing your environment, habits, pictures, everything... painkillers are really bad, stop right now! they're addicting, and you can get into more trouble (with yourself) than without them! i warn you in fear of the future. it's true. but i get the emotional pain you are going through. emotional, right? you can't express yourself to your friends/family? i don't know how to do that, maybe someone on here can help, but i can recommend that maybe you can see your school's counseling center, if they have one. i am not sure if every school does, but mine does. they work pretty well, if only to give someone for you to talk to.
uni is so much better than hs in the social realm, is it not? friends are easier to come by . i know i have lost friends due to my distance and awkwardness. you can't tell them you need time alone to sort things out for a while?