I know people say 3-30 days, but is the 30 the maximum no matter what your weight? As in, is 30 days usually the max for someone who smokes everyday and that's the max it will take if they stop for 30 days, they'll test clean?
The "30 day rule" does not apply to everyone. We've had many reports here of longtime heavy users taking alot longer than 30 days to finally test negative - even a few that took well over 100 days.

Now, I have a drug test May 14 (a month and a week from now) and I was wondering if it would be out of my system with my weight, the amount of times I smoked, and me not smoking anymore by then? I want to know for sure because I need this job and I also don't want to drown myself in juice (because that's a lot of sugar and like I said, I'm in the process of losing weight) or buy detoxes that are a waste of money. Help please!
Nobody can realistically and accurately answer that question for you. Each persons body is different and there are too many variables to take into consideration. Since youve expressed a desire to "know for sure" (and rightfully so), only periodic testing with a THC test kit (using the first urination of the day for each time) can give you that answer.