When you notice blood in your urine, it can cause a lot of panics. Medically, blood in urine is known as hematuria, and it really should not cause panic, especially when the cause is not known yet. When you notice traces of blood in your urine, you should make sure you see a doctor so that the cause can be identified and you can then move forward with treatment if needed. 
Usually, hematuria occurs as a symptom and not a condition itself and to get rid of it the underlying condition is treated. Until you see your doctor, you may not be able to discern the cause of hematuria.
However, some of the causes of blood in the urine are discussed below.