Somethings Are Better Left Unsaid

Ok so in less than an hour I managed to cause a even bigger rip in my family. What use to be temporary solitude and a few arguments between members has now somehow managed to turn into my sister leaving and me getting my own room. I should be happy since its what i always wanted but Im not. I hate that it had to happen this way and i feel like an ungrateful bitch. All I wanted was to get a pair of headphones so i could listen to music and somehow that led to me n my sister gettin into an argument about how she uses my bed as storage which led to me tellin my mom that its not fair im the only one who has to be put out or inconvienced. I had been alternating between sharing a room with my mom and sharing a room with my sister for forever and now its so solem here. I feel horrible, but idk.Don't get me wrong I'm happy I have a home and im happy every ones alive but what i said earlier i only said because of emotions, SUre it was the truth but still...I feel like everything is falling apart and its ALL my fault.