I'm having my son tomorrow

I'm having my son tomorrow. I haven't stopped crying. Not happy tears. I don't know why I'm so sad. 
I moved far from home a year ago, to saint Louis. 
I have yet to make a friend. Been at home sick with my pregnancy. It's now taking its toll. A year with no interaction with friends or family. Now I'm having a child. I have his father who I love. But he works 40-100 hours a week. 
I'm so alone and now I'm afraid to be alone with a child.
I'm so lonely. 
I miss my home I miss my family I miss my friends. I miss talking to people
I'm depressed as hell