What Causes Penile Pain After Urination?

Dear sir/madam, I musterbated frequently for last few months. From last two weeks, I found blood in my urine sometimes as well a mild burning sensetion in lower abdomen. I visited a physician and he gave me a syrup (Urikind) and an antibiotics. After that, blood is gone. But now I am experiencing a sting-pain in penile top after I urinate. It lasts for couple of seconds. No problem in urinating except that psin What the problem may be? I stopped musterbating from last two weeks. One thing, I had a kidney stone 2 years back. I visited an urologist and had medicine as prescribed. Any advice? suggest some medicines. Thank you.