<s>[INST] This is pretty embarrassing considering my circumstances, but I have just urinated a small amount of blood. I admittedly masturbate excessively on a daily basis (at least 3 or 4 times a day), could this have caused me to urinate blood even if it was only a small amount? Currently, only the tip of my penis hurts, the rest of it has no pain, so I don t know if I ve damaged my urethra or not. In any case, I am very scared, any help would be much appreciated. [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Your local urethra examination should be done in your case. Mild urethral injury can be possible. Second acute urethritis like urinary tract infection can lead such presentation. Urine routine microscopic examination should be done for that. If pus cells and bacteria present than urine culture should be done and antibiotic course prescribed. Hope I have answered your query. Let me know if I can assist you further. </s>