Im worried, I tried to orgasm without ejaculate (to be a multiorgasm man with my girl) so I tried a technique I've read on internet which consists in when you're about to ejaculate, you squeeze between your testicles and your dick while you contract your PC muscle. I had an orgasm, and ejaculated just a lil bit, like I did not ejaculate all my semen. Problem is, that after 30min I saw blood on my dick. I went to take a piss, and some blood came out from it. And that was it, now I'm not feeling pain, nor blood is coming out, but I'm freaked out. Is this technique safe? should I stop? should I be worried even if I'm not feeling pain and blood is not coming out anymore?