Reasons for this?

I just had another urine sample done and I had blood in my urine, but no UTI or other infection. Why else might there be blood in my urine?

I went into preterm labor on the 14th and baby is still hanging tight (they've been stopping the contractions with shots and meds)... not sure if that would make a difference or not. I was thinking the constant contractions are causing the irritation/blood?

i was peeing blood and they could not find out why and i was contracting said if i was still peeing blood when i delivered i needed to see the urologist.