Postpartum depression help

A little background. Baby girl is 5 weeks. I have been staying with my mom for 3 weeks now 2 hours away from home because my husband is working 17 hours a day on the farm. I needed the help. But since I've been here my depression has kicked in big time. I know I need to go home, he's expecting us back this weekend. But every time I think about going home I start to panic. I'll be alone all day every day in a small town. I mean if I'm here in a big city with someone with me constantly and I'm struggling how am I going to make it at home?