Very recently you had a kind of break though, right? And now this? I wonder if it isn't some kind of a reaction, kind of abandonment related, like
@Solara said. You FINALLY had something happen where a light came on and you saw that you really COULD trust this guy, now he's "not going to be there", Now what, right? Maybe all kinds of bad stuff is going to follow, because it "always does".
I'm making this guess because I just had something similar happen. Some stuff happened about a month ago and a light came on about something. Then I actually had a session where I found I COULD talk about it and he DID get it. (Even though I'd have told you earlier that I trusted him quite a bit, this was different. He said I only got it about an inch deep, that I need to get it all the way inside, and that it's not "there" yet.) For about a week, the world was a wonderful place. BUT, my T is in the middle of making some changes in his professional situation and he's kind of waffling on plans. (He's maybe not much of a planner.) And I, following a version of a long standing pattern thought, "SURE, I finally decide I can trust him and he's gone. That figures, that's the way it ALWAYS works! I'm such an idiot to have even DREAMED this would work......." You can go down that road as far as you want.
Anyway, I wonder if at some level you're not aware of, you don't have a similar scenario playing out. I'm not saying this is an accurate, reasonable way of looking at the world, just that it exists as a way of looking at the world. (They DO call it a "disorder" after all.)