scrotum bleeding

Hi, I'm a 57 year old man. Yesterday morning I had a shower, dried myself off and then went over to the washbasin to clean my teeth. When I looked in the bathroom mirror I saw blood pouring down my legs. After I mopped myself off I saw that it was coming from my scrotum, but I couldn't see a cut or understand how I could have cut myself there anyway. The bleeding continued for about 15 minutes, but I eventually managed to get it to stop and covered up the area where it seemed to be coming from with a plaster. It didn't hurt or anything, just lots of blood. I haven't had any pain in that place . I was a bit nervous in the shower this morning, but this happened third time.

Is this something to worry about? I've made an appointment for tomorrow evening with my doctor, but am I panicking over nothing?