I think I've screwed up my future. I am in my third year, double major in physics and math (math major more to supplement my understanding of physics), and this semester was just horrid. I made the mistake of moving off campus, working two jobs, and in the time I had to study, could not focus well. I just got my grades back, and among the usual As and Bs, I got a C in an introductory discrete math course. I still have two years of undergraduate left. I plan to get a doctorate in Physics. Have my dreams been killed by this C? Are there grad schools out there, decent ones, that accept students who get one C? Other than the C, my transcript is pretty ok; As and Bs, mostly As. I also have some killer research experience. Thank you for any support; I'm really sad right now.