Seeing new psych tomorrow

I am feeling very anxious, actually sick in the stomach because of an appt I have with a new psych tomorrow morning.

I have been with another psych for 2 years and still under the care of a therapist. I was starting to feel that my old psych didn't listen to me or validate me and I thought it was time for a change.

But I am scared and anxious - I have to go over the 'same story' again, retelling my story of being abused as a child, the details of the abuse, who, how, when etc etc. I have to tell him about my parents disowning me, how I feel about it all; my depression, anxiety, BPD, my hospital admissions, my mother in law with dementia living with us for 20 years etc etc etc.

I don't know if I will be able to cope. I know there will be tears and I am so anxious about seeing this guy.

The appt is for an hour and he will do an assessment. After the past week and the emotional stuff i am going through I feel that i will break down in his rooms.

What do I do? I know he has to know all my story but I get so upset and dissociate when talking about my abuse.

Dissociation is hard to explain - it's like I am there but not there. I am in my own little world and not understanding what people say to me when I am like that. It is scary.