Zoloft

Did anyone take an anti depressive like zoloft during pregnancy? I lost my twins at 6 months in a horrible way and am still recovering from it (without medication). We are about to try again but I am terrified of a new pregnancy and that anything could happen again. My doctor assured me that zoloft will bring down my anxiety and has been tested enough to not cause any problems to the unborn child. Does anyone have experience with this?