Zoloft starting at 32 weeks 3 days?

Katelyn
Hi all!
So I went to my OB yesterday and spoke with her about how I've been feeling lately. (I'm very angry and depressed feeling towards my hubby. I feel like he doesn't care about me and baby even though I see he's working his butt off for us..) I've had some emotional problems all my life, but I've never tried meds for it. 
She recommended starting Zoloft 50mg before I deliver just in case of postpartum depression.
I'm so nervous about taking a class C medicine because I don't want to hurt my baby. Has anyone been on this? Did baby respond okay after delivery? Thanks!