When your body is getting close to the point of ejaculation or orgasm the scrotal sac pulls up as you described. That's normal in men. Perhaps you are just trying too hard to make it happen? Or it can be due to an underlying medical issue which needs an evaluation by the specialist. Just wait it out until you see the specialist, I assume it's the urologist. For now, just see if it happens on it's own, be certain prior to beginning intercourse you are already in a high state of arousal nearing the feeling of climaxing. Relax and try to let it happen.
sera300
Posted: 23 Sep 06:22