HSC - Misadventure, Somehtign happened Satruday night

Hey guys Im currenty in my final year of highschool in AUS and take my first final exam on thrusday (its tuesday nigth now), something happened on Saturday night when i was out clubbing, a guy I didnt know but he was my age (i foudnd out later), BUT put his hands down my skirt and squeezed my bottom and was also tugging on my underwear, he also tried to put his finegrs in me through my built in shorts at the front which he was half successful in, i was tryign to curl away or push his hand away the whoel time, i dont even know if this counts as SA and i havent been able to study without what happened impacting it, i dont know if this counts as a misadventure or what to do really, paper 1 is on thursday its tuesday night now, what would be the best thing to do in my situation, i have a friend whos willing to tell a teacher with me after paper1 but i think i need to do this before hand?