Change is really hard, especially a new city that you are unfamiliar with. The feelings of depression might stem from being overwhelmed? Maybe it will calm down when you feel more comfortable. Is there a group for new students you could join? I know some schools here offer that. It's a good way to meet people and feel more comfortable. Kudos for 7 months with no SI - that is quite an accomplishment! Hang in there and please don't hurt yourself!