Urine Test For Pain Management ?

Alright so this is my first pain management urine test and it's on APRIL 14,2008 to all you USAer's lol, and i am well was a everyday pothead, and i stopped on March 30,2008 i know it's cuttin it close but im not a FATTY and for my job @ shitty UPS i do nothing but run around all day and i mean all day .. Do i have a chance of ping on the 14th of april ( and yes i am drinkin mad water and cranberry juice ) if not the only way is STRIPE @ GNC "system cleaner" ? or do ya'll think i have a chance with jus burnin alot of calories and burnin left over fat drinkin alot of water and juice ?