you'll be fine. i was worrying just like you a cpl weeks ago. i had a pre employment screen for a pretty important job... i was clean for 15 days exactly when i took the test and i passed. you didnt smoke nearly as much as i did b4 being clean. just to be safe like some1 earlier said, just drink bout 15-20 oz of water and pee a cpl times and then take down a gatorade and pee again b4 you go in, good luck with your j o b