Dear Welcome to HCM We understand your concerns I went through your details. If ultra sound on kidneys and urine tests are done and doctors could not find anything which could cause blood leakage from penis, then you should not worry much. Bleeding is also possible from a tear in one of the fragile veins within the prostate, the organ which produces most of the seminal fluid following sexual stimulation. arousal without ejaculation, excessive intake of spicy foods or you will usually notice spots of blood on your clothing as well. Irritating the prostate gland may also cause inflammation that will increase your risk of bleeding. Infrequent alcohol, withdraw at the time of ejaculation, bike riding or similar activities can increase this risk. The prostate may also become infected, causing bleeding. I suggest you to consult the doctor once again if the symptom persist. If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. Hope this answers your query. Available for further clarifications. Good luck. Take care.