I am 21 yrs old, in great shape. I work out all the time, and have always had an extrrrrreemly high sex drive. But all of a sudden exactly 2 months ago it completely dissapeared. I can even remember the day. I havent changed anything in my routine or taken any outstanding supplements to cause such an effect. I have a steady girlfriend who obviously wants it all the time. And she used to not be able to keep up with me. But in the last 2 months Ive had sex once, i hardly masturbate, and I dont get mourning erections. my penis looks smaller than ever, and its very very embarrassing and depressing. Ive looked everywhere for answers and I thought well maybe my testosterone levels just dropped dramatically somehow, so i started taking tribulus terrestris for about a week and a half to no result, still taking it though. Im panicing big time, any clue as to what I can do, take, or some one to see is very helpful. please this is embarrassing but I need to figure it out. thank you for your time and concern