Should I tell my family I'm depressed?

Ever since my aunt died a year ago of brain tumor and my two best friends ditched me for the popular group I've been depressed and now I'm a totally different person. I went from being ambitious, smart, social, funny, happy, and having a sunny personality to becoming boring, anxious, sad, antisocial, and I don't connect to people at all anymore. I've lost all of my friends because of this, including my best friend that I've know since birth. My family can see that I'm a different person but they haven't said anything to me about it. I can tell that they don't really love me anymore. My brother and I used to get along really well and now he truly hates me. My mom loves my brother so much more and even my dad who used to love me to pieces isn't crazy about me. I know that no one loves me anymore. I feel like if I do tell my family they won't accept that I'm lost in life and need their support and love to get through. Last year my brother went through a depression and my parents weren't very happy with him and turned their backs on him and favored me. Now I feel like the situation is in reverse. Please help me should I tell my family I'm depressed even if they don't love me? Is it worth it? And I can't turn to anyone else because I have no one else! Please help me!