Hi, about a month ago I had a uti and was treated with a few different antibiotics and felt better. Just went back for same symtoms which I felt I had brought onto myself for not changing out of workout clothes all week until a few hours after sweating a ton in 90 degree weather. Microscopic blood showed in my urine and they started me on an antibiotic two days later they called to say I don't have a uti but to finish the medicine and come back for another urine sample next week. I googled reasons for blood to show up without a uti and am now scared. The odd thing is, I was feeling better with taking the antibiotic. Questions, can this be common without being serious? Should I finish the medicine if it sounds like I didn't in fact need it? I did start at the same time as all of this a few miles a day power walking with spurts of running and was one day out from the end of my cycle. Any positive insight would be helpful.