Zoloft and exclusively pumping

There really isn’t much information out there for anyone on Zoloft while exclusively pumping. Heck, there isn’t a lot of information for people exclusively pumping period. Can anyone tell me if they take Zoloft for PPD/PPA and store their milk. I am nervous that storing it in the fridge will cause high concentrations in my milk. I know I may be over reacting, hence me taking Zoloft. I just want to know if anyone else is doing this, how it works for them, and how they are handling pumping and storing milk. I would appreciate the help!