After I ejaculate the opening at the tip of my penis itches(its hard to tell if it’s any kinda burning if it is it’s mild but mostly feels like an itch). Urinating right afterwards helps to alleviate the feeling. This only happens when I ejaculate and only at the opening. Two months ago I had unprotected sex once. It didn’t last long because when I put my penis inside I felt a weird sensation so I stopped. I have no sores or anything.