If I have understood correctly - the psychiatrist who is treating you as a patient, made a lot of self disclosure at the end of your last treatment session. Now you feel confused, hyper-vigilant, and worried about your next session, as well as unsure how you are supposed to relate to this psychiatrist - are you friends, or colleagues, or are you his patient. I'm summarising what I've understood, you can say of this is correct or not, apologies if not!
Anyway if I have more or less understood correctly, then I think that firstly, it is not your fault that this situation has come about. It is the responsibility of the psychiatrist. Secondly, this goes to show exactly why dual relationships (e.g. patient and colleague) are usually best avoided, and also why Ts including psychiatrists neeed to be very careful of self disclosure. I'm not saying it's always wrong for them to reveal things about themselves, my T does this. But they should be very mindful of why they are doing it. When the psychiatrist is in a session with you, he is at work, and his job is to help you. It sounds like he has lost sight of this and it has made things difficult for you. I'm sorry this is the case.
Any chance you could switch to a different clinic, or see a different person within that same clinic? It might make things a lot easier for you. I would say ideally switch to b img treated somewhere other than your workplace.