Suggest Remedy To Stop Semi Erections Throughout The Day

Hi, I am 44 years old and every day I get semi erections, its up and down all day long, and I feel so conscious about it, that I think everyone knows, though I wear long shirts to hide this emberassing situation. I am to the point that I can not do anything to get ahead because of it. When people are around I get very conscious , and try to stop it, but it only makes it worse, what can I do?