i have been operated for sinusitis surgery on 10 th feb.i was given few tablets . after having those i got ulsors on my tongue and tip of the reproductive orgen.  before i have been operated the scin was easily wrapped off the tip of a dick but thereafter whenever i masterbated, i got pain bcz  the scin starts  wrapping off.
Hi. Operation of sinuses is probably not the reason you have ulcers on tip of reproductive organ. If you Han unprotected sex or been in unhygienic conditions, there is good possibility that you have sexual transmitted disease. You should be examined by STD specialist to determine diagnose and use treatment. Treatment will improve quality of your life and stop spreading disease to others. Do not hesitate. All the best.