Can somebody help me ?

(Read my first post if possible(I'm sorry but I forgot the title) so everything else can makes sense)

I cant take this anymore. I cant stop having day-nightmares of my "aunt" barging in my school, saying she knows everything about me and/or is telling embarrassing stories/anecdotes because after, in those day-nightmares, I confront her asking her why doesn't she accept me in her family and to answer me by using the truth (at least once in her life). I cant deal with is anymore : it is haunting me 24/7. Please help me. How can I get rid of'em? What meaning is there behind it ? Why did my life turned upside down when I found out she didnt accepted me ? Why do I focus on this?