Hi
I now see a dark bluish black thread coming out when I masturbate and also see the same but dry thread from my belly button again when I masturbate, I do masturbate quite a lot, a lot!! Like 10 or more times a week. I only thought this was because I hold my penis for a long time before I wash the semen on it, and I also stroke pretty hard when I masturbate. I am 18 now.
Do I really have to worry about this, please do reply and thankyou very much