I went through a similar panic self-diagnosis with my therapist. When I first stumbled onto the characteristics of BPD - all I felt was shame. I believe a cure for shame is talking about it - although always risky. My therapist really had no reaction, and basically said it wasn't me. From what I understand, it's a slightly controversial diagnosis.

For me, the thought of a BPD label made me feel like I wanted to shrink - which was really the opposite of what I was trying to accomplish. In a way, it just felt like more judgement when what I needed was self love. If a label helps because it gives understanding and perhaps meds, then pursue it. But also pursue what helps you heal, what helps facilitate your truth, acceptance, and self love.