took her to docs this morning with a urine sample.was told she has a very bad urine infection as there's visible blood in it.given a course of antibiotics but was told that if no better within 24 hours to go back. all day, she's been playing and running around but - although urine appears to be "clear" again - she's still having pain when "passing". Do i take her back in the morning-dr gave me a red-topped bottle to bring a hospital-sample in if i do bring her back to surgery-or do i see if pain subsides over the next day or two? (obviously, if urine looks reddish brown again i'll take her straight back but not sure what to do about the pain side of it.)