My daughter (who is only 15) gets chronic bladder infections. We have finally figured out what they are from (won't go into THAT here) and the last one hit here like a ton of bricks. She too had blood. I don't know why she had it, but the medicine cleared it up right away.

Don't sound like a baby for worrying. This is a new symptom for you, and I'd be more worried if you didn't care about it. Please go to the doctor or hispital to give yourself peace of mind.