About a month ago what looked like a blister began to grow on my penis shaft and I ignored it and masturbated. Fast forward to the present now it looks like a blood blister and there is redness around it is prupleish, and there looks like a really small white dot on top of it? There is a small amount of pain ONLY if I push on it other than that it sometimes with itch for a brief second. It is only the bottom side of my penis so it is probably rubbing up against my ball all day as I do alot of walking for work. Some other things you should know is that I Have never had sex and I smoke week about once or twice a day.