My mom has transferred to a job in Windsor and I can't stop crying how can I stop?!

Ok, so my mom got a really good job in Windsor and she put me in charge of so many things, (laundry, cleaning, making lunches for my brother, e.t.c) especially taking care of my older brother ( he's disabled) anyways, after he first day she left, I was trying to stay strong, but I can't, I cry myself to sleep every night, I'm only 12 and I have to take care of my household. I have a dad, but he works a night shift, and my older sister doesn't help out that much, she's to occupied with her social life. Anyways I don't know how I can stop crying, and I have been very antisocial lately too. Do I have depression or something?! Please help :'(

I'm 14 I think you're in shock and too overwhelmed. Maybe sit back and ask your older sister to lend a hand and have you dad help as much as he can during the day so when his night shift comes, you should have most things taken care of