Ok, last night, i pre-cummed for the first time, and i was scared to rush to toilet (was in my bed at the time), and , well, it stopped. Today, i wanted to try again, except this time with porn (also my first time with porn). I got up tp orgasim, and then i noticed something: my penis was bleeding. not out the urethra, but like a small cut or scrape or something just below the head. it hurt to touch, and i lost the experience. then it started hurting A LOT. any advice? should i try again, even with a cut?