bme123abc

This was my first semester in an engineering PhD program, and I think I screwed up. I had to take a grad level math class which is curved so 60% of the class gets C's, and another core course in my department (BME). I have no idea what my grade will end up being in this math class, but I've resigned myself that it probably won't be an A. My issue is the core BME course. So the average in this BME course is about a 72%, and my average is a 67%. I have no idea how the professor curves, or what I received on the last homework assignment and final project (cumulatively about 28% of my grade). Should I email the professor and explain that I underestimated that class and ask if I can redo assignments for partial credit? I don't want to ask for free points or a grade boost just because I'm a grad student, but I'm really freaking out and I figure it never hurts to ask for the chance to work for an improvement. I have been to talk with the professor a couple times, and participated in class more than any other person over the course of the semester. Our final grades aren't due for another couple days, and she is a notoriously slow grader. Basically, I'm 5 points below average in a class, and want to know if respectfully emailing the professor would hurt or help my case.