Rock bottom

I feel so lost and alone. I wish this fog would just lift up. My sister (who was my absolute best friend) moved out, I lost my job and cannot even pay anyone to hire me it seems, I failed out of nursing school four weeks before I was supposed to graduate, and yesterday, my 8 year old Maltese was run over and killed. We have had her since she was a small puppy. I feel like I have nobody to talk to. I’m in a downward spiral and I feel like it’s winning. I haven’t talked to my friends in so long they don’t even know how bad my depression has gotten and I feel like I would be putting way too much on my fiancé.