I have not smoked weed in over a month and the other day i took 2 hits....how long will it take to clear?

I need to take a drug test in a couple of days.I have not smoked weed in over a month and the other day i took 2 hits....how long will it take to clear?
weed stays in your system for 21 days. buy a detoxifier. i used terminader gold 60 and it worked for me. and i smoked a joint about 3 hrs before having a random whiz quiz sprung on me.
Drink a gallon of water per day and pee alot that should do the trick..
it all depends on the THC level of the weed. If you smoked swag I wouldnt worry about it.
So sorry, you're screwed.