Hello. For the last couple weeks I have noticed blisters on my penile shaft. I'm only 15 years old, and masturbate occasionally just to prevent wet dreams. I'm still a virgin. I masturbated the other day, and these spots started oozing and bleeding a little bit. They scab over within a day, and hurt under pressure. Before they were this bad, it was extremely itchy, and now I cant itch it due to intolerable pain. These blisters, as I call them, are a bit over a cm in diameter. Is it an STD? Could it have been in my genes? I'm hoping its a fungus and some creme would do the trick. I'm to afraid to tell a doctor in person or my parents. Can you help with this?

Thanks,
Nick