I would also talk with your adviser to discuss your options. I've seen people contest grades when there is a lot riding on it. That might be an option for you.

I'm glad you're not out of the program entirely. It sounds like you'll just have to wait quite awhile to retake the course. Heh, I had to wait about that long just to get into my program due to a wait list. It is a pain but don't let it deter you. Use the time to do something beneficial. I went on vacation and worked in volunteer and job positions that would look good on a resume. Life hands you difficulties, but they are what you make of them.