I was rather pissed off at my unit convener for knocking back my application for special consideration for last semester, but after talking with a psychologist from campus well-being, I feel much better about the decision. Apparently, you no longer get bumped up a few marks, all you get is the opportunity to sit another exam – which in my case was the last thing I wanted. And getting 78% for the unit as a whole was a great result, especially since the way Macquarie works out GPA is to give 1 point for a CP* (will have to look up what this means), 2 points for a pass, 3 for a credit, and 4 for a distinction or a high distinction. So a distinction is every bit as good as a high distinction in terms of keeping my GPA high (which I need to do to transfer into Psych, and to be admitted to honours).
Secondly, I talked to her about how high my stress levels are this semester (I have already gained back 2 of the 10 kilos I lost while I was sick), and how seeing formulae on the lecture slides makes me feel like crying, and I have been diagnosed as having perfectionist tendencies that go a little beyond what is strictly considered adaptive. She has offered me counseling, and (hooray!) a free tutor for 2 hours a week to help me get through this unit.
Tutoring is reliant on there being one available, so I have to keep everything crossed, but I am feeling a lot better about the switch to MQ after that meeting.
*Apparently a CP is just like a fail, but they recognise that you were pretty close to a pass, and they let you through.