Its great that your exams went well, for the most part, Emily

Sorry I didn't reply sooner, but I would like to say not to let the tests results stress you out either. If you did the best you could do, then you shouldn't have a problem and nothing to worry about. Are you allowed to retake your exams in Aussie or are they final?
As for your sickness, I'm glad you are feeling better

I would make an appointment to see a doctor if your symptoms don't let up soon. You definitely don't have the common cold and might need more antibiotics or medicine to help your body fight whatever it is. Just try to relax and not stress, and of course get as much rest as you can, if you can't get to a doctor right away. Hopefully, whatever it is that you have will be gone in the next few days or so.