Yeah my personal thoughts are that the Internet can be a very dangerous place to diagnose ourselves with certain things and one diagnosis may overlap into another which may cause a false "positive" for a disorder you don't have. If I took every test available I'm pretty sure I'd be diagnosed with a multitude of disorders.

I only pay attention to what I'm professionally diagnosed with by my treating mental health practitioners.

Having said all of the above- I must add: if you are having suspicions of being bpd I see no harm why you can't bring this up with your treating mental health practitioner for a professional screening and take it from there. Your suspicions may be right. Or they may not be.