recently i had smashed my head when sleeping . i rolled off the bed and hit my head off the night stand.. i couldnt get rid of the pain and i couldnt fall asleep so i took a percoset (if thats how u spell it) not thinking that 1 week later i have a drug test comming up for the union.. wheni take the test is it going to show that i took a percoset? i am relativly overweight and i only took 1. if it will show is there somthing i can take so that i can pass? please help... thanks?