I went to the Minute Clinic 2 days ago with what I believed to be a UTI two days ago. I had had the symptoms a few days and started trying to self treat with left over amoxicillian, AZO and tons of Vitamin C and a gallon of water before the test. They gave me a regular antibiotic and sent my urine off for culture. My urine came back with no bacteria and I was feeling better yesterday but today I am feeling it again. Could all the medications I took alter the Urine Culture?