You will need a doctor, at some point, to re-evaluate and to handle any meds.
I take it there's no doctor in the behavioral health clinic.
You have to get off the Zoloft. It may or may not need a taper. You also may need other meds to get you stabilized. A doctor would be helpful.
Yet, if you need help right away and no doctor is available anywhere, see behavioral health.
I hope you have access to an ER should you need help in the night or outside the hours of other places you are considering.

WC