Everything is crashing

I feel like the world is closing in. I’ve been having issues with my fiancé a lot lately. Everything I do makes him angry. When I try to bring up my problems with him he just dismisses them like they don’t matter. I feel as if no one cares about me. I’m drowning in my depression and feelings because I have no one to talk to. I feel so alone, small, and worthless. I had issues with self esteem before this rough patch but it seems as if he’s just reinforcing everything I already think about myself