Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

Funny you mentioned about earning the trust of the whole story - I also dislike having to go over my history or medical history with new people, doctors, whomever. Just revisiting it makes me feel defeated sort of, and I have much anxiety beforehand knowing I will have this reaction.
Do keep taking care of yourself and getting the help you need right now.
A good, skilled, experienced therapist should allow the client to tell their story on their own time. I think it is even okay to tell the therapist you'd like to take some time to tell them X or Y.