I need help!! Please anyone!!!!!!?

OK so my stepmom and my dad fight all the time mostly bcuz of the way they are livin...in a small house, my dad doesnt get along with my 16yr old step brothers, and i cant see them till oct. for personal reasons, but other than that, My dad and stepmom fight constantly. My dad has quit drinking cuz of all of this which is a good thing. unfortunately they still are fightin alot... i dont know what to do...my dad said he doesnt think they are goin to make it much longer... my step mom got mad cuz i used some of her shampoo and conditioner and was in my dads room when he went out, he doesnt care but apperently she all of a sudden thinks its a crime. idk anymore i mean she is like my best friend i can tell her anything but all of a sudden she has changed... huhh idk i am so nervous i have spent over half my life with my step family, i dont know wat i would do with out them! ='( Please help me!!! Thankz so much!