Hi, When you defecate, feces move through the rectum and out of the body. Therefore, it is conceivable that the pressure and straining from a bowel movement, especially if you are constipated, could press on the prostate. Passing stools through tectum in few people may gives sexual pleasure lead to semen leakage. Also check for prostatitis or urinary tract infection may also present like this. Please consult your physician/neurophysician they will examine and treat you accordingly. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Penchila Prasad Kandikattu