UTI sympt., culture neg., blood tests show high WBC & neutrophils. Meds not working. Found undiscussed UA from mths ago no sympt. W/ RBC 4-10. Worried?

Rightly so! Worry is appropriate with cause. It should tell you, in this case, that something else is going on and needs further evaluation. Problems with other organ systems, like the GI and reproductive symptoms can cause urinary symptoms. Also some bacteria that cause urinary infections are not found on routine testing and which routine antibiotics don't help. Get checked again!