is this severe loneliness or first stage depression?

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Have you ever experienced it that you can't or you don't want to go to sleep yet because you are so lonely and sad and you are waiting for something that would make you happy before going to sleep. Like maybe, an email that brings good news, or a message notification from the person you like a lot or a funny comment from a friend on your facebook or get several likes on your recent instagram photo. It happened to me often. I can't sleep because I kept on waiting for something that would make me happy - not the usual everyday small things that I just take for granted now - but i am constantly waiting for a surprise that would make me happy.