dude you will be fine, smoking a blunt will stay in "your" system around 3-4 days but, if you smoke back to back days it will double the time.If it was some med's to high grade i would say 10-11 days at the max.I have done lots of research on this crap and thats what i would say a educated guess we all are DIFFERENT and have different metabalism rates.I wouldnt worry to much tho if you have been there for a while and , took a drug test 3 months ago.

MOST drug tests are good for 6 months ! but some companys insurance policy are different and have very stringent testing.

I have read that smoking one day, wait three days and you can be clean. And soo continue the process, but smoking day back to back will create a resin buildup that is very hard to breakdown.Taking metamucil could help and just keeping your active lifestyle and being hydrated should keep you straight bro. But like in your trade, like mine. You could get tested randomly for insurance policy's. ALSO they use the random drug tests, for a easy way to fire people.

good luck man