If you are on meds, and from your description it sounds as though you would be, talk to the prescriber, and to someone else---T?
Yes. It can take a long time, when your world comes completely undone, it is difficult to regain (and you will not regain it in the same old way, it will be altered, just as your perception of childhood experiences changes with age and experience) the trust in yourself (and sometimes others) you once had, hey you thought at some level as we all do when young------invincible.
I came undone in my late teens, early twenties,no tx---not then---I have never been the same person, but in some ways (60 now) I think I am a better, if still troubled person, with lots of ups and downs, good times, confident times, times of doubt----------------it comes slow. It's like being in a head on collision.
Give yourself time, and permission; practice listening...do things you get pleasure out of, small or large, ---acknowledge your uncertainty. You are not alone....................