Gosh this is a tough one because I understand what you're saying, but it's not an easy one to pin. I was diagnosed with bipolar and BPD a few years ago. I know bipolar is wrong. I had a great therapist back then who thought it was DID, not bipolar. I saw someone else a few weeks ago who is inclined to agree with my old therapist and said he didn't feel by reading the vast medical notes on myself and what I'd written, that it fit BPD as much as it does DID. I was also told that I probably have PTSD which was originally diagnosed years ago. It's hard because I have read up both and I can relate to much of the BPD symptoms, but perhaps not as well as those of DID. I would keep digging until you feel satisfied you're all on the same page. A correct diagnosis IMO is very important but you need someone listening who is actually listening. I have felt many occasion I'm being humoured, rather than listened to. You'll get there, but for now