Am I wrong?

Okay so everytime my mother is being completely out of her mind going crazy mad she takes everything out on me calls me names and yells or throws stuff when she's mad and cleaning everything can be perfect and she will go crazy and I am so tired of her cursing at us say we can leave but if I would she would go psychotic on my boyfriends family I'm going to be 19 and I'm pregnant at this point I do not want her going to my next doctors appointment for the ultrasound she seems to always forget how she treats us and wants to be apart of everything I can't stand it sometimes I just want to leave and never come back but my siblings and my dad which they get treated bad to so am I wrong for not wanting her there?