I very well may be screwed

Military guy here 6'0 210 lbs. Did a wake and bake this morning at around 5 am. went into work to find out i have random urinalsys :/. so i left work, drank about 6 gallons of water, 3 or 4 niacin pills, a Strip NC and a couple drug tests. the test i took before i went in had me barely passing after pissing about 10 times. I came back into work at around 4pm and took the test. im already packing my things up and letting my fam kno a negro is comin home early :P. i swear if i pass this ill never ever ever ever ever ever smoke another blunt. its not worth the risk :/