Then just do your best in all of your classes during those next three semesters.
I get the impression that you made this thread so we could respond with either "It's okay, you'll be fine' or "Give up; it's over". As you said yourself, you have three more semesters, so any response along these lines would be inaccurate; they usually are inaccurate in general.
Reevaluate aspects of your life and ask yourself if any change can improve productivity and academics. As I'm sure you know, GPA isn't the only factor that determines an acceptance; focus on developing yourself as a better applicant as a whole. I'm sure you really want to be accepted in state, but there are many other students who want the same thing. Unless you're suffering from unusual circumstances, you can do it if you really want to.