My mom said she's going to have another baby?

Wow. You need to talk to your mother and tell her how you feel, this is too much responsibility for a child your age to undertake. My suggestion would be for you to use school as an escape. Try staying after school, join clubs, just do things so that you're not at home often and your parents realize what a pain the kids are. But first, try talking to your mom. I really hope that it helps, good luck.♥