Bleeding from urethra
is a serious symptoms which needs to be investigated more so in the 50 plus age group.
Various causes of urethral bleed are
6.glomerulonephritis- inflammation of the kidneys
As you are having two episodes of urinary bleed ,it will advise you to consult a doctor as soon as possible.
You will need blood and urine investigations along with imaging in the form of Ultrasound
+/ CT scan
to reach the proper diagnosis.