Hi @JImmyT 👋🏻
Welcome to the forum 😊
im just checking because sometimes it get confusing whether you meant your girlfriend said BPD as in borderline personality disorder. Occasionally those letters get mixed with bi-polar disorder.
Sometimes going through the process of looking at a different diagnosis is daunting. It might be a good idea to talk to your psychologist in an open conversation about why your girlfriend thinks that particular diagnosis and what you connect with. That way the psychologist can get the full picture and work out what happens next. Sometimes that might be some medication changes or changes in therapy or neither. I am going through a change of diagnosis now again and have the same lost feeling even though I can see how some things add up. Once I go through the diagnosis process I think it will be easier to then find ways to cope better.
When you feel comfortable your diagnosis in my experience it is more about looking at ways to cope better than just having a label. I hope this helps. Best wishes. 😊