I dont know what to do

My mom and dad are not going to talk to me for a long time. and the worst part is I live with my mom and on this Saturday we are going to pick up my girlfriend, and then she is coming to live with me and my mom

I have read your other questions and think I understand this one.
First, they are your parents. They are upset, but will still care about you and will get over not talking to you. Parents have hopes and dreams of what their children will accomplish and when things don't work that way, it's upsetting. It doesn't mean they love you any less. They just need time to adjust to the changes that are now going to happen.
The best thing you and your girlfriend can do is understand how they must feel and show them you are both responsible.
As bad as things sometimes seem, they have a way of working out.
Do not forget to emotionally support your girlfriend. This is a big change for her as well. Hopefully your girlfriend will do the same for you. Work as a team and show your parents things will be okay.
Honestly, your parents will accept this and things DO work out. : )

well do you know why she isnt talking to u?