Depression and stress while pregnant

Serenity

I need some advice I've been stressing over things like financial issues and my fiancé and I recently moved into a new house with my mother them but lately all I have been getting from them is them bitching about certain things calling me lazy and my fiancé is blind he can't go to work. I have been trying to look for a job while being 5 months pregnant and taking care of my three year old daughter at the same time. I feel like everyone is against me and I have been crying for the past three days and I can't seem to stop I'm worried about my son I had tried everything to relax but nothing seems to work as I keep getting bothered and I had tried talking to my family but none of them wants to listen not even my fiancé I feel like I'm all alone in this and I have been trying to fight my depression by myself but I'm at my wits end where I wanted to harm myself and I don't want that happening. I don't know what to do. Help me please