That sounds rough. I remember being 15 and having to leave school early to stay in the hospital for being so suicidal. And of course you can't really explain that to anyone, especially at such a young age. I was diagnosed with a number of things since years ago, but was diagnosed with BPD only half a year ago (I'm 20, almost 21). Yes, they don't typically like diagnosing young teens with this disorder, but even without that official diagnosis I think you've got a pretty good idea of what to get help for which is the important part. Like Fharraige said, I'd bring those test results in! Best of luck.