I am freaking out

I just got an offer for my dream job, but it requires a drug screen. I have never had drugs in my life, but on st patricks day, I smoked an entire marijuana with a friend. By my calculations this was 44 days ago, most websites say that this should be sufficient time to be undetectable, but does this take into account that I smoked an entire one?

What should I do man, I'm freaking out. Is this what I deserve for being reckless and crazy?

>>1
an entire marijuana
That is not a valid unit of measurement. How many grams?

This sounds like some stupid reddit bullshit.