need some support.

I’ve been living with my boyfriend for about 7months we have adopted his little brother and have him full time after some family stuff happened I won’t get into it, all my stuff from my mum ain’t here as I do go home sometimes but not often but he doesn’t want me to move all my stuff in yet until we get decorating so I just got what I need but I find myself missing home and wanted to go back home but I end up rowing with my mum so bad when I’m with her to mum and I always want to go back to my boyfriends when I’m home but I’m 21 and it’s has always been me and mum just us and she has her fiancé and I have basically moved out and I feel myself getting so down because all my stuff at here and we are in the middle of decorating it doesn’t feel like home but where my mums fiancé has moved in and we don’t get along that don’t feel like home either I can feel myself getting very depressed and I don’t know what to do😔😔