I think you are in the right site. Please read the experience of many men who are facing the same problem. I told the entire my story into this forum. Andrew in particular helped me a lot. Desensitization is a very efficient method. I've recently asked a close male friend to be my pee-buddy (in short: to accompany me in the toilets) and that resulted also very useful. Remember many men and also women suffer the same symptoms as you. You are young, so I advice you to face the problem with courage and as soon as possible. You could participate in one of the workshops this site organizes. I've never been there because I'm Italian, but if i were in England, I would certainly participate. Many men also have commented their participation to these workshops, and all are enthousiastic about the results.