Spartan420

I have weekly testing for the next 6 weeks. I'll be tested every Tuesday and Wednesday, and if possible, I was wondering what the risk would be for me to do a one hitter (maybe two?) after my Wednesday tests. I'm around 145lbs and 5' 6 and am defiantly clean because I've been passing the tests already given to me, but I didn't really expect to be continuously tested for such a long time. My plan would be to exercise Thursday, Friday and Saturday as well if this would help gaurentee me to be clean. I have no idea what kind of weed I'd be smoking, because I'm not even gonna get any unless I decide its a good idea or not, but if i do get some ill probably just get a gram of the best stuff I can get a hold of. I'm really just wondering how risky this would be, I'd much rather be clean and be done with it in 6 weeks then fail and make it longer, but if its possible to get away with getting a little buzzed once a week and relaxing, I certainly wouldn't mind that.