HI, thanks for using health care magic
Any bleeding in the intestine would normally present with blood in the stool and not usually the urine because the passages are not connected in a normal state.
(blood in the urine) can result from another of different causes including: idiopathic (the casues is never known) ,infection, trauma to any part of the genital tract , stones,kidney
disease, tumors,some systemic illnesses.There are also some medications that can cause discoloration of the kidney.
You can monitor you urine and determine if you notice it occuring again. If it does then you need to consider visiting your doctor who will check the urine at the office and send a sample to the lab.
Depending on the results and the findings on history and examination- an ultrasound
may be done
I hope this helps