What Causes Perineum Area Pressure And Discomfort?

I AM HAVING PROBLEMS BETWEEN MY SCROTUM AND RECTUM. AT TIMES IT FEELS LIKE PRESSURE AND OTHER TIMES IT FEELS LIKE SOMETHING IS RUBBING THAT AREA LIKE SANDPAPER BUT THERE IS NOTHING THERE. I REALLY BOTHERS ME WHEN I WALK OR EVEN TURN OVER IN BED I CAN FEEL IT. IT IS NOW EFFECTING ME AT WORK. I AM ON MY FEET ALOT AND WALKING. IT IS REALLY BOTHERING ME.