I know how you feel, I just got a D on my first test so far in my History class
I know it isn't that big of a deal because it's not really related to Nursing, just a pre-req for my school, but I was SO upset. I haven't even gotten a C all year yet and then this! But it was my first test, and my prof. explained that everyone usually does bad on the first test because they don't know what to expect, like the teachers style of doing things. Was it your first test in that class? Atleast next time you will know what to expect from the tests.
I agree, ask to see what questions you got wrong so you know, and then make sure you really did. Scantron makes mistakes sometimes, I know that from my tests in high school. Good luck!
Oh yeah and I know that if you ask about your test scores, and show a concern about your grades, your prof. will see that you really care and are trying. This may not make your grade, but it will definitely show you are being dedicated to your work and you really want to get a good grade.