I Recently Had Urine Test At My Pain Clinic (not

I recently had urine test at my pain clinic (not unusual, regular every few months) and my dr. indicated a very minute morphine read - had about 6/8 weeks ago taken one Phenylaphrine Hci 10 mg for a v. severe cold/throat i problem. Could this possibly be the problem in test result - only thing i can remember taking as very unusual for me to have a cold. Thanks for any info.