Over the summer I was feeling really great with myself and didn’t find the need to take sertraline anymore but I was wrong. I abruptly stopped taking sertraline and when school started back up I was having trouble sleeping and had worsened anxiety. I decided to start taking my sertraline again and now it’s been 3 weeks and I feel like crap. I feel I like I’m crawling out of my skin and had a couple of panic attacks since then. I’m not sure what to do. Has my body built up a tolerance to it? I have an appointment next week with my doctor but I don’t know how much longer I can take feeling like this.