I personally suffer from G.A.D.(Generalized Anxiety Disorder) and Social Phobia and panic attacks. I did the same thing, and it was a mistake.....I believe you should go back to the doctor and see what they say. It may be helpful to try taking the meds at a lower dose than before and/or trying a different medication. :) but I'm no doctor (: good luck dear
It sounds like you need to go back to your doctor and discuss this with him. You may need to go back on the Zoloft, but it's best to discuss this with your doctor.