Was about to take a shower and noticed drops of blood on outside of underwear and the inside was much more blood. Never had anything like this before. The kicker is that it was a little when I void but otherwise it was dripping! Very dark blood almost black and clotted quickly when I touched it. Actually believe the clotting kept it from being worse! Nothing else except when i void it seems to be very small clots at times. During all of this I had no pain or discomfort. Why was it just the one time, cause no other problems since? What could it be?