I am 16 years old and I still have my virginity. However, my girlfriend performed oral sex to me a day ago. The next day I masturbated and saw that my cum was a little brown. However, it might be from the fact that my girlfriend also gave me a hand-job and was a little rough. When I masturbated the next day, I tried to imitate her and squeezed a little bit. This might have done something but I'm not sure. When I ejaculated it did not hurt but soon after my testicles hurt a little and it seems like there is a vein or two that are red. This has never happened to me before and I have not tried masturbating since then. Since I am not old enough to go see a doctor alone and I do not want to tell my parents, what do you think could be the problem and what you think i should do. Oh, and by the way, I am very freaked out by this so a quick response would be great :-D thanks.