Please tell me im not crazy

So i am 17 living with my mom and dad. So yesterday night I was up playing a game and this game as a voice chat (I didnt have mine on) but i could hear other players. The other players happened to be guys but all they were talking about was THE GAME. So its around 1 am, I am not too loud to where i disturb anyone but my mom happened to be up. She comes and knocks at me door and so angrily asks me who im talking to. I just tell her friends and we’re playing a game. She starts yelling at me saying im talking to grown ass men, thats why she cant trust me, im so spoiled (which i am not), i don’t deserve anything and im never getting anything and etc. She was basically bashing me in every way she can. Then the next morning when i went to school, in the car she was like “You’re not ashamed?” and i said “ashamed of what” and then she started going off on me again. PLEASE let me know if this is normal behavior. I literally think shes crazy. My whole teenage memories were ruined because of her. She keeps me on lock down when i havent done anything wrong. She wont trust me and then as soon as she sees with talking to a guy ( HE COULD EVEN BE GAY) she would go ballistic. I remember once in middle school she called me a prostitute just cause i cut one of my shirts a little shorter. And i dont even go out for me to wear it so it was just for fun. Meanwhile she treats my brother like a prince. HE can do whatever he wants meanwhile i cant. I ACTUALLY do chores, he just comes home to sleep and take our food. I swear to god im going crazy in the house hold or am i overreacting.