What do you do when...

What do you do when you feel like your mom is one of the main reasons you might be stressed out/ depressed. And you cant talk to her about it bc then she will take it offensive and get severely pissed off and go bat shit crazy.. I feel like I’m stuck. I do every thing for her and all she does is yell an scream at me. No one else in the House helps her out. I take care of my grandma, who also lives with us, and I help her baby sit when I get off work. Her husband comes home at 3 pm and goes to bed for the rest of the day, every day. Every little thing I do wrong she blows it out of proportion and it’s wearing on me I’m so tired of it...