So I'm 16, and as you can imagine I masturbate frequently. I decided to do it a couple of days ago (by the time this is answered maybe weeks) and noticed that under my (circumsized) foreskin there appeared to be a skin-colored structure, which upon first glance resembled a lump. Upon closer examination and inspection I was able to gather that it was not a lump but a kind of worm-like thing, and was able to be moved within a certain range and did not cause pain. I decided to see what it would so if I was erect, and to my surprise it appeared to dissapear. I am very worried and have not told my parents. Please help me.
Tyler