Same thing happened to me, I smoked a few hits on the weekend and by Thursday, my urine came back clean. I was clean for a few months before that. It does depend on your metabolism and body fat though, I'm 5'2, 108 lbs and I hit Fri-Sun, so I consider myself real lucky and won't chance it again until I'm in the clear of all testing. You should be fine, go buy some tests and try it yourself, if you have to dilute again, take the vitamins and eat alot of red meat to get your creatinine levels up. GOOD LUCK