I am an 18 year old male. Whenever I go to the bathroom (1 or 2) I sometimes get a cramp in my perineum (the part between the scrotum and anus). It happens when I finish urinating or while I'm just pooping normally. It also happens when I ejaculate frequently within a few days. The pain isn't extreme but it's pretty discomforting and can last anywhere from 1-20 minutes and then just stops. It feels like a cramp but when I feel it, it doesn't seem tight. There is no bulge so it doesn't seem like a hernia, and I have no other symptoms of a hernia or a urinary tract infection. Also, since this started happening, my erections don't seem as strong as they used to be. I've looked across the internet and it doesn't seem like anyone else has it. So, does anyone else have this problem or know what would be the most likely cause?