This is a physiological factor, probably due to the sexual excitement caused by seeing a pornographic film, the penis is erect for a long time, the prostate gland is congested for a long time resulting in pain and discomfort in the abdomen, scrotum and other locations, usually do not touch the sexual stimulation can be recovered on its own. The actual fact is that you can find a lot of people who are not able to get rid of the pain, but you need to consider that it may be caused by prostatitis.