I have been smoking weed since I was 18 years old and I am now 20 years old and my THC level came back GREATER than 800. I haven't smoke in 24 days and I have been drinking nothing but water and cranberry juice and taking cranberry pills because I have severe heart problems and cant work out. I have a drug test coming up within 21 days, will I pass it if I continue to drink water, cranberry juice and taking the cranberry pills ?