From my experience, checking yourself in works much better, that way you till have a little bit of your rights left, and here yuo can ask for a 3 day out, which is where you write down when you came, why and why you want to leave, it's then given to the psych and if he can't build a court case on keeping me within 3 days you get to leave, but that's only if you check yourself in.
Take care of yourself sweetie, you are a great person even if you don't see it in yourself, we still can, just like you can see good in me and I can't, doesn't mean things aren't so. :wink: :hug: