I'm sorry to hear where you're at Midnight.
I can understand getting upset when you're left at home alone - especially when you area going through what you are at the moment. Try and stay with a friend, or get them to come to you. I went through the same thing last week. Wed I was really sui. My boyfriend had also gone away Wed morning and was only coming back on Sunday. I slipped into MAJOR depression, and for my own safety and comfort, I jumped on a plane to visit my friend and stay with her for the weekend. Please look after yourself