Hi there......and warm welcome to you!
I was dx with multiple dxs 16 years ago......Borderline PD, Schizoaffective and PTSD......agoraphobia and Generalised Anxiety disorder were transient but potent episodes......and all kind of interplayed with each other.
It takes much time to sort through things if there are multiple presentations......I really feel for the frustration of feeling like it is swinging from one side to the other

I have had my trusty psych team in hopsital have open debates about the dxs.......so I was treated for all of them, both psychiatrically and medically.....
From a treatment point of view, it is good to have a dx, but try and not put too much emphasis on any one thing.......a more holistic view will reduce your anxiety somewhat......besides, you are the manager of your own treatment.....question, question, question everything if you are not sure. A second opinion is also a good thing......Get that pdoc working for their money
Take good care babe.......and keep talking......we are here.....
Hugs
Michah