Seeing blood in your urine is alarming, and it should never be ignored — but it also isn't always the emergency it feels like. One of the most common causes is a kidney stone scraping the lining of the urinary tract as it moves.
A stone has rough, crystalline edges. As it travels from the kidney down the ureter, it can irritate or nick the delicate lining, releasing a small amount of blood into the urine. Sometimes that blood is visible (pink, red, or tea-colored urine); sometimes it's microscopic and only picked up on a urine test.
Blood in the urine can also come from infections, an enlarged prostate, vigorous exercise, certain medications, and — less commonly — conditions that genuinely need ruling out. That's exactly why visible or persistent blood in the urine is worth a proper evaluation rather than a wait-and-see at home.
If you see blood in your urine, get it checked. If it comes with fever, chills, an inability to urinate, or severe pain, treat that as urgent and seek emergency care. Otherwise, a prompt evaluation — including imaging if a stone is suspected — sorts out the cause and tells you whether a stone is present, how big it is, and where.
If any of this sounds like your situation, a prompt evaluation can tell you exactly what's going on.