Ok, so I am new here, but I really needed some advice. I have been self harming for four years. But let me stress this isn't all the time! Sometimes I literally feel great, like on top of the world. Even my social interaction increases

But then afterwards I come crashing down and that leads to my behaviour like self harm, and in the past suicide attempts. But I feel so listless when I am like this, and cannot bring myself to do anything.
But I told my friend that I was thinking of going to the doctors, and she basically told me not to bother. As most teenagers go through what I'm going through, and I will grow out of it. But I was just wondering, if I did go to the doctors and tell her this basically, but stress that I am not suicidal, can they break confidentiality?

Bear in mind I am a few days off being 18