clean from thc

Hey guys, I didnt smoke for 34days and in the next 2weeks i got drug test from blood and urine for Army. I exercised 3-4 times a week and Im 6ft and 168lbs. 1 week ago i tested negative from drug store thc urine test cutoff 50ng/ml but yesterday i tested 2 times positive. Are there chances that i will be negative in 2 weeks?