"I feel like they don't believe me"

I had my first assessment, and my psychiatrist told me at the end, they think I have bpd, gave me information on anti psychotics and types of therapy. I knew for 2 years or so I had this, I met the criteria to a T. So I have another meeting to talk more, I guess to confirm more. Asked about a diagnosis, they said 9 questions to be diagnosed, not sure if that was going to be in the next appointment, I was hoping.

What I find hurtful is that at the end they said their opinion is it's bpd, turned to me and said that that was if I was truthful about my symptoms, and stared at me for a few seconds... like they wanted to see my reaction. Like if they could tell by my face's reaction, which i suck at in serious situations. In serious situations, I don't come off truthful at times, I am being truthful, and really want come off as believable, but I feel like it comes off like I am lying, like I am forcing myself to look and sound truthful, because I want to be believed, but I don't look like I am telling the truth, like a am faking it. 

At the beginning, I told them I wrote my issues and symptoms down, why, how, when, etc. They didn't even let me finish my 15 bullet points of symptoms lol. Obviously, I know the reasoning is because they wanted me to be truthful and natural with my own answers. After I read my pages (or half!), they asked if these were my own symptoms, or if I had seen them online.  I know I sound like google with the exact criteria and the correct buzz words for the 9 commonly known criteria for bpd. But it is real and true for me. I go through every single symptom. Some are not as severe, maybe mild to moderate, or severe.

They told me they would see me again in 3 months...that was almost 7 months ago. I have been seeing my keyworker.. now taking medication that actually helps! But they told me I have to be more stable to be referred to DBT therapy, and there has been no conversation about seeing psychiatrist again, when i brought it up once they told me we go through them and they let the psychiatrist know, updates them. I can't figure out as to why they don't seem to want me to see them again after telling me I would the first time.. I feel like they don't believe me, my truth, with my symptoms. But they must have seen and heard that it's all true.. my  sessions with them always have a break down story of something dramatic that has happened. Can anyone let me know why they haven't seen me again?