Hey Johnny. I know this is a late post but maybe you'll be able to check it out and can provide some info for ya (that is if you haven't already had your test). There are a lot of factors to look at for your situation.

Did you end up smoking over the weekend? If so, How much? Like myself, it seems like you are a skinny/fit individual with a high metabolism, but even that plus exercise, cranberry juice, and water won't clear your system in just a few days. Another factor to look at is how often do you smoke (before starting your 2 weeks of sobriety)? If you are an occasional smoker who only smoked a little during these occasions, then there is a chance you may pass. If you are a daily smoker, like myself, I'm sorry to say you will more than likely fail.

Unfortunately THC is the drug that takes the longest to rid from your system. The cranberry and water can help the natural process of getting rid of the metabolites in your system but they can't do the job for anyone in just a matter of a couple days.

I myself am going through a natural detox (cranberry juice and vitamin supplements which include B vitamins and niacin) because I also have a drug test coming up in the next week or so but I'm giving my body 20+ days to cleanse.

And I wouldn't worry about the detox drinks. Most of them don't work, they taste awful and are expensive. Unfortunately the best way to detox your system of THC is a natural process. The only real advice I can give you, is to pick up an at home test kit (which you said you don't have the money for a detox drink and a test strip from your local walgreens can be upwards to 20$ for one test). If this is not an option, I would find a friend with clean urine and get some from them. Make sure the temperature of their urine upon giving the test is between 92-100 degrees so the test result doesn't show up as inconclusive, in which case you will have to submit another test.

Hope any of this information was helpful to you and I also hope it wasn't too late. Good luck!