I am a male who had sclerotherapy injection for haemorrhoids. I had a burning feeling in tip of my penis for a few hours after the procedure. (3 hours) and a initial dark yellow discharge with urine. (only once). Later when I am masturbating I have blood in semen. I consulted a doctor and was prescribed antibiotics ciprofloxacin for 7 days. Is this an infection? What treatments should I get? Can this lead to impotence? I read that it can effect cavernous plexus.