I havent smoked weed in 41 days but i was a habitual smoker for 3 months I weigh 120lbs and im 5'8 I have also been very active the past 41 days will i pass a drug test tomorrow?

It depends on the type of test used. Some can detect THC for only thirty days. While others are more sensitive and can detect it for 90 days. If the test results are inconclusive, you could be required to submit to a hair follicle test that can detect THC use six months back.

The only certain way to pass a drug screen is to not use illegal drugs.