I almost failed my math course, and i had to ask for an Incomplete to get it extended so i could finish the work, that way i got extra time to work on it. Fortunately i was granted a IN and passed with a D even if you only get a D it should still be passing in most schools, but i know you would probably like a higher grade. Considering it is a course that you only need to finish as your last course for the degree? that was my case and i had to beg for an incomplete and the teacher was a B****. I ended up with the D and now have my Bachelors degree. Good luck!!!