It's hard to explain.. But for the past year or so, throughout the day i experience a strange semi-erection that comes and goes. It isn't fully hard, but is noticeable and extremely embarrassing. It rarely goes fully erect, and just kind of sits in a semi-hard flaccid state. I'm 22, so this shouldn't be a huge hormonal issue and I feel as if something is wrong. It hasn't been hit hard or anything like that lately. I don't want to go to a doctor, because I wouldn't even know where to start explaining.