scared of sleeping alone?

Do you ever get scared of going back to sleep when your SO goes off to work? I'm currently home alone and his parents don't lock the door because they are in and out all the time. I have a dog here but he's stubborn and won't stay with me 😞 I'm pregnant and moving into my own home soon for god sakes! What the hell am I doing!!! I think it's because I've started to have vivid dreams and nightmares, even though he's only gone for four hours on his morning shift I'll sleep until he's back but I'm terrified of waking up to another nightmare again. I'm so tired and have morning sickness I don't know what to do 😞