I am 15 years old and I have recently found a pee sized lump on my penis. Its near the bottom of the penis on the left side. I've never had sex or anything that could give me an STD. I'm scared about this and I'm very shy to tell someone about this. I haven't had it for a long time but its still there and its pretty big. Its on the shaft of the penis and I'm not sure if its an ingrown hair or what it is exactly.. I tried popping it once but all that came out was blood and if I squeeze it it hurts.. Help me pleaseeee:(