Hi, i'm 16 and i am a virgin. I have experienced oral sex once but that was about two months ago. I recently noticed a spot on the shaft of my penis, (the side of which leans against the testicles). I left it thinking it was achne but after a week it grew quite large (1cm in diametre) and was sore to touch. I then discovered a weird painfull sensation on between my pubic hair and the shaft of my penis. After this i discovered the sensation just beside the spot. This sensation feels like a bruise. Taking account this happened all within a week and a half could you give me any infection notice and treatment if possible?

Kind regards Lucian