Will the THC still be in my system?

I have a drug test June 16th, as of june 16 it,ll be 16 days or 2 weeks 2 days. I run every other day 1 mile-3 miles. Im even using the the 7 day cleanse kit from GNC hoping itll help me a little bit. Im drinking a gallon of water a day. I was a heavy smoker, by that I mean everyday between 2-3 blunts betwwen 6pm-10pm everday for 3 weeks. Do think its possible for me to be clean by then with all the stuff im doing to get rid of the THC?