Really worried about being alone

I know it's normal to worry about having a newborn but I'm so anxious about being alone after I come home. My boyfriend said he can't take any time off from work. My dad works full time but will probably take a few days off to be with me but besides that I literally do not have anyone to help me out or even just be with me. My mum is disabled and won't be able to watch baby/keep me company at my house. I have my two best friends but they both work full time and have their own lives. I'm just really anxious about being so so alone right as I come home. I'm not so nervous about taking care of my son as I am about postpartum depression as I know I am very susceptible.

Any one else feeling the same way or have any suggestions?