What happens if a narcotic shows up in a UA and you are on a diversion program?

i have a diversion officer and prior to my UA i took a percoset, i didnt have a prescription at the time... but i have a broken tailbone and found that out 1 week later. i took it for pain. i am not a drug addict, i was just in a lot of pain and had no money to go to the doctor... i now am on many prescriptions for the pain... how do you think this is going to work in the legal system? is this an okay reason to have taken it.. or do you think there will still be trouble in my future.. please let me know!