Mom always yells at me for no reason

So today’s Sunday and I’m just relaxing with my pajamas on with nothing to do or worry about because I have to got to school tomorrow and I get really tired easily. Everybody in the house was asleep except me(watching tv) and then my mom wakes up and comes in the living room where I’m at and starts asking me a whole bunch of questions about if I’ve been helping around the house and then she starts yelling about how she gets tired of me. So I automatically get in defense mode(not fighting)and yell back at her because every time she asks me to clean she always got to have an attitude with me.

I know that Im she lazy and she wants me to help around the house but you don’t have yell at all the time. And then she goes back in her room and closes the door and starts talking about me to her husband. Then I started crying.

Me and my mamma used to be like a best friend to me but now ever since she got married to my step dad she always yells at me, and I’m tired of it. Everything I do makes her mad. I get so stressed about it that I want to run away.