So ive been noticing an oily film when i forget to flush at night and its there in the morning with a very noticeable smell. So anyways I am going to a methadone clinic because I got addicted to pain pills specifically fentanyl. Tje last time I used was january 6th and I have been 100 percent clean since then. I had a random drug screen that is a urine test that gets sent to a lab so its pretty thorough and I tested positive for fentanyl 3 months after i used last. Is there any explanation for this. Its been driving me crazy and its the first time i have beem clean in 2 years and of course no one at the clinic believes which I dont know if I would believe someone either so I understand the skepticism but I am very scared why this would happen.
If anyone has any ideas please dont hesitate to respond. Thank you