Schwagged OUT!

Alright, here's another "im a dumbass who smoked while on probation thread" but nvm that... I've been clean for 3 months, and smoked 2 bowls through an apple on last thursday, and one bowl through and apple last friday...then had an ITTY BITTY pinch about 1/6 the size of my fingernail, enough for one hit through an orange last night (tuesday) and ha yeea I know I use fruits because it works WELL/I don't want a pipe... but anyways I'm pretty muscular, don't have much bodyfat, but not completely lean.. and I have a test which will be next tuesday, exactly 1 week since the last time I smoked. I feel like I should be clean because I had no more than half a joint's worth of weed altogether, but my tolerance is so low right now that even the smallest piece of a hit gets me BLOWN, so I feel like that could mess things up.... I'm thinking about just using creatine/drinking a good gallon or so of water before the test to dilute it even though I've been exercising and dieting. any suggestions or thoughts or how long before I'm clean or what I should do? ANY serious answers would be appreciated...