Hi I Took One Of My Boyfriends 2mg Clonazapam On

Hi i took one of my boyfriends 2mg clonazapam on sunday due to the death of my mother and was extremely freaking out and i dont take these ever and i have a job interview with a drug screen test n now im so stressed out that i will lose this opportunity. I dont know how long it will stay in me and everywhere i look online sais 2 wks but i only took it the one time so is it 2 weeks no matter?