drug test, help please!

I was just looking for some opinions from people who know what they're talking about here haha. I have a urine test tomorrow for a job. The last time I smoked was last Sunday (9 days ago), about 4 hits off a joint. The time before that was around June 25 and I barely got buzzed. I only weigh about 100 lbs, 5'3..about 2.2% body fat. My metabolism is very high, I almost cannot gain weight no matter what I do. The past 2 days I've been trying to up my water intake, fluid intake period. And I've been sick lately so I haven't been eating very much, I heard that helps too? I was just wondering, do you think I'm clean or should I detox or dilute to be safe?
thank you!!