anxiety4s

I'm 45, 6ft, 210lbs and and prolly a slow metabolism but typically drink lots of water. I received an offer from a company totally unexpected and learned they do drug testing- urine testing to the best of my knowledge. I smoked a few times in Febuary and not again until about 10 days ago, when I took about 4 hits off a one hitter, 2 on friday and 2 hits on saturday ( I'm a wuss ) anyway, by the time I take the urine test it will about 11/12 days after my last hit. Do I need to be concerned.? I panicked, ran to a head shop and picked up some Stat pretox pills that I later learned do nothing ?

I have heard the metabolites stay in your fat and can be detected long after but no one seems to know for sure. Will I pass or fail ? TIA for the help.