NEED ANSWERS!! 19 yr old female ;

I was on Zoloft for about almost a year and stopped cold turkey. I left to rv across the country with some friends and my doctors office has a STRICT attendance policy. You can only cancel and recall to make an appointment so many times before they suspend you or something like that and i havent been there in a few months later i have violent outbursts, my anxiety is high and thoughts of suicide. it's straining me and my realtionship with my boyfriend. I've never felt like this before and never been a violent person. OR had anger issues. I'm confused and don't want to destroy my mental health and it lead to something drastic. I do not feel like myself at all and I really would like some answers. I'm going to call my doctors office tomorrow and see if i can still be able to go through them as a doctors office.