Drug test for Job need help to pass.

So I did weed for the first time in a long time three days ago. It was the first time I think in one to two months. I smoked from a bowl, and only took three to four hits. I got a call a day ago from our local unemployment office and they found me a job. Well the only issue was She told me I would have to take a drug test. I went for my interview today any they hired me on the spot. So I have to call to date my drug test. Yesterday I called my mom and had her come get me. I broke it too her that I did weed. She gave me a 750 m of Niacin, and I drank a load of water, just trying to flush my system out. Today my mom gave me another 750 m of Niacin, and I have been still drinking water like no tomorrow. Here are a few other things I am going to do. I am going to drink a giant jar of pickle juice. Does it work, and out of curiosity if it works does anyone know why? I know sweating gets the THC out of the system so if I go to a sauna will that work as well?

Please no one give me grief about it. I know I shouldn’t have done it and blah blah blah. I am not going to give the plead story were I say ‘I will never do it again’ because even if its a few years from now I more any likely will. I know I wont while I have this job, but yeah. Thanks for any and all help.