To smoke or not to smoke.

Hey guys here is the situation:

I'm clean now for almost 50 days, and before that
I wasn't a hard smoker. So no problem passing.
However,

today was my test and the urine was light yellow.
My friend, the ass that he is, gave me a nice big present, and
now the demons have gotten a hold of me. I want to :stoned:

I was planning on :rasta: right after the test, but now
I'm uncertain. Will they reject me test on the premise that the
urine isn't yellow enough?

I didn't drink a lot of water before the test, but they made me wait
an hour in there, so all the water collected in my bladder. I ate a grapefruit before too, and that's a huuuuge diuretic.