If I take UTI pain relief medication will it interfere with my UTI test tomorrow?

Clarification. If you decide to take Pyridium (phenazopyridine) for UTI pain it cam affect the urine results but the urine culture can help detect the bacteria. Taking an anti inflammatory such as advil will not affect the results.
No. Pain relief medicine will not cause any problems with the tests done to look for a urinary tract infection. A urinalysis and urine culture won't be affected by pain medications.
Yes . I would go ahead and take but if you call the oncall doctor they may be able to call in the antibiotic for you and then perhaps getting the urine culture tomorrow.