So I (19 M) recently realised that I might have BPD, I've felt weird and different my entire life and these symptoms sum it up pretty well and Im going to see my doctor soon to tell him that.

Now here me out, Im suffering I really am and I want to get help ASAP, Im really scared that Im not gonna get diagnosed correctly or something, that they will brush it off as a "difficult phase" or something, how do I convince my doctor that I seriously need help and I cant go on like this? What things are important to mention? 

tbh I just want to know what your first talk with your doctor about your symptoms was like and stuff because Im kind of insecure and dont know what to expect...