I was recently told after multiple meetings with a friend's parent who is a practicing psychiatrist that she strongly believes I have bpd, as much as anyone she has given a proper diagnosis of bpd to. However, she isn't my doctor, I have just met and had multiple 'sessions' with her because she is my close friends mum and I was really struggling with mental health and here in the UK, especially where I am, it takes a long time to see an NHS mental health specialist. So I have no official diagnosis from the healthcare system and really can't do anything about it in terms of receiving any support from anyone. 

I want to speak to my GP and ask for a referral to me local mental health team but the few times I've seen him before about mental health things he's been very blunt and quite rude to me. Additionally, I have accessed private healthcare before because I'm trans and waiting lists for that kind of care in the UK are super long for that, and when he found out he told me if I was doing that then I didn't deserve any NHS care anyway. 
Because of this I'm terrified of going in and speaking to him, let alone suggesting I know what's wrong with me :/
What I'm getting at here is can anyone give me any advise on what to say when approaching a doctor about this kind of thing? Should I suggest I think I know what's wrong, should I mention that I've spoken to a psychiatrist, just not through the system and kind of as a favour, or should I just say I'm struggling and let him ask questions? 


Like I said, I have been told this by an actual psychiatrist, it took me a while to be able to post this here because I'm still terrified of people thinking I'm self diagnosing/looking for a diagnosis/seeking attention

I was hoping some kind folk on here could help 🙂