Will I pass my drug test?

Ok heres the details. I am 19, im about 5 foot 10 and weigh around 135 lbs. Im not sure what percent body fat I am but im pretty sure im below average. Pretty skinny with a high metabolism. three weeks ago was the first time I smoked in over two years and I took two hits off a batty. I smoked two hits that day amd havent smoked since. A total of 24 days went by between then and my drug test. Should I be worried about passing?