Should I change my anti anxiety medication?

So for the past two years I've been on zoloft for a generalized anxiety disorder. I started off on a moderate dose and last year some things came up and I was put on a higher dosage. When I think about it, I'm constantly worrying, but not about the stuff that I was put on the medication for. I also had to go through a technique in therapy for the certain phobia like condition, I wish I remember what it was called but it's kind of like you're being hypnotized..it has to do with the REM cycle..anyways after going through it, my fear wasn't a fear anymore. But I still wanted to be on meds. to be sure I could live my life again. So I don't know if the medicine is actually working with just calming me down in general. I'm not sure if I want to be on medicine anymore. So should I try changing medicine???