Pregnant and severe anxiety HELP

I am 9 weeks pregnant and I have been extremely anxious the last 4 weeks and it’s been debilitating. I have a hard time sleeping. I am constantly worrying my baby will have birth defects and I am obsessive over it. I can’t relax and in a constant state of fear and panic. My OBGYN said itssafe for me to take Zoloft which I started two weeks ago but not sure it’s helping that much. I am seeing a therapist but just started. I am scared my pregnancy will be like this forever. I am having a hard time being excited or feeling good about it. Has anyone else dealt with this during pregnancy? any tips? Would love to hear I am not alone in this!