Giving birth soon, alone…

I got cheated on back in the begging of a PLANNED baby. ( our fifth child ) we wanted a boy so we planned to try the last time and got it… but he cheated. I can’t forgive him. And I’m terrified to have a baby alone . I don’t have any close friends or family and everyone lives far from me. The emotions didn’t hit me until tonight, an the thought of it is scary. Anyone been through this or have advice? I’m 31 weeks 😕