It's hard for you; of course, you're worried about yr parents and the house& no one child wants their parents to divorce.
You need to realize that it's not yr fault; whatever happens between yr parents is their responsibility and not yours.
You must talk to someone and let it all out; bottling up yr feelings will make you sick. Talk to a trusted friend or a trained counselor. Also, it helps to keep a journal or write a letter to yr parents about how you feel and then burn it; don't send it.
Try also to be supportive of yr parents but try to have a life of your own. Get out with yr friends, and make time for hobbies and excercise. Be sure to keep studying as yr parents will be proud yo do well in school. Be sure to eat well& look after yourself.
But before anything else, find someone you trust (friend, teacher, counselor, aunt, whoever) and tell them how you feel. When you release your emotions, you will feel like a big load is off your shoulders.
Remember your parents may not divorce. If they do, it's hard but it's not the end of divorce (I know that from experience). You will take a while to adjust but you will feel happier if they live apart and yr dad continues to see you rather than have them live together and be fighting and unhappy all the time. Remember they will ALWAYS love you even if they don't stay together. You just want them to be happy as they want YOU to be happy.
See a counselor today and live your own life. Be strong and trust that things will happen for the better.
I hope things get better for you and your family.