I'de say your busted. I've been caught twice, the first time my mom went through my backpack. I came downstairs and my mom and dad confronted and made me swear I'de never smoked pot, first mistake. Than my mom pulled out a bag, a film container - all with weed in it, and my lighter. Like buddy said "that was a bad day". Then I was caught AGAIN less than a week later. They still think I do it, and well; they're right. There is nothing you can do, but they will deal with it and then get over it.