Zoloft while breastfeeding?

Kat • Pregnant with baby #3
Just got prescribed to Zoloft to help control my postpartum depression/anxiety .. My baby is 3 weeks old and I don't want to give up breastfeeding. The doctors say it's fine but of course I still have anxiety about it. But I've got to be on medicine to help my relationship with my Husband. I'm very emotional and moody. Anyone else taking Meds and breastfeeding?