Translucent coloured vomit and nose residue! - 10 points?

The other day I was in an exam and I sneezed, I looked on my hand and then on it, There was this extremely thick translucent goo on it, with a white tint, smelling slightly like oysters. About 2 tablespoons full, 'Twas followed by an extremely painful feeling all across my face and chin. I went out of the exam for at least 20 minutes, and return to my extreme humiliation, I'm not sure if it's not of much concern but by the time I'd gotten back to my desk the goo had become crusty and adopted a shiny pinkish tint, I also noticed when I was crying outside the exam my tears where marbled with a greenish cloudy tint, I've kept it secret as to not raise unnecessary alarm, What do you think it is?