Is dizziness a sign of a UTI?

I blacked out while standing up last week, and today I'm feeling dizzy again. I don't have any other symptoms, but I did test positive for a UTI this morning [home test]. I'm heading to the doc this afternoon for hte official diagnosis. I don't remember this dizziness associated with it before. Anyone else?

oh, and I am not PG, so it's not a symptom of that.