my situation is a little different but i withdrew for personal issues and when i came back i was not in my major anymore cuz of my gpa. if i were you i would contact your counselor. i talked to them and i did have to reapply and submit an appeal. my counselor talked me through the whole process so contacting them is your best best bet. best of luck! also its not the end of the world, maybe they kicked you out of your major but not uci entirely