I Recently Took A Urine Test For Probation I'm Prescribed

I recently took a urine test for probation I'm prescribed adderall Prozac and suboxone i tested pos for amphetamines and methamphetamines I thought everything would turn out fine once it was sent to the lab but was I wrong it also came back as positive with VERY low levels of meth. I'm probably going to jail Thursday for supposedly taking a drug I did NOT take. Is there any explanation for why this happened????