Help! I have a pre employment drug screen tomorrow and I smoked twice, once on the 18th and also on the 19th of this month. The last time I smoked was a year ago. It just so happens this job fell in my lap last week and now I have have a screen. I took a home test yesterday and I got both lines but I'm not sure if I should trust it? I'm 5'6", 145 lbs, female and freaking out. Any advice?