I had clean urine but didn't have enough to cover the line so I had to add my own. It was about half and half. I have been clean for 2 weeks and before that I smoked 3-4 times a day in a row. Will I be clean?

Marijuana stays in the body for months sometimes.  I would say it probably won't be clean.  If this is for your probation/parole officer it is usually better to just tell them upfront that it won't come back clean.  It shows you are willing to admit your mistakes.