Will my past marijuana use show up on my probation drug tests?

I got caught with a pipe 2 months ago and haven't smoked since. I have learned my lesson and take responsibility for my actions vey much. I'm now on a pretrial diversion program and I'm on probation and have no desire to smoke again. Will I p my tests or will the past come back and make me fail? I really wanna do good on this program and complete it so my record will stay clean cause that's the deal if I complete the program. And how often will my color come up to be tested? (please don't judge me we all make mistakes and I've learned my lesson plus I'm young and stupid and I'm human and make mistAkes, especially in my college years)