My mom has cancer and I need someone to talk to

I am 13 and my mom is going through breast cancer. It is hard time to talk to her and discuss my problems enteering these teen years. I also have a lot of friendship problems. My dad is very stressed and well hard to talk to. I need someone to talk to about my friends especially because they don''t mind me talking about my mom but don''t like me talking about them. They say I am selfish and stuff but well idk. They also avoid me at recess and stuff. Please help me!!!!!! I need this or I will go in DEEP depression so I think. I have never thought of killing myself but I am worried I will unless I get help.