Hi, I'm 14 years old, height 180 cm, weight 64 kg and I masturbate about once or twice a day. When I masturbate I usually apply a lot of pressure with my hand, for a long time I didn't understand why semen didn't come out when I reached an orgasm, and then I realized it was because of my masturbating technique. When I try to masturbate like most guys do, rubbing it very fast, my skin becomes red and it's very unpleasant. Is that normal? Thanks