Depression

So after I had my son I started getting really depressed didn't wanna get out of bed or do anything. So my dr prescribed me medication. I was feeling so much better. But recently I stopped taking it and now I feel even worse. I feel like I'm a bad mom or bad wife or just generally a bad person. I had depression before I had my son just didn't do anything about it. But now having postpartum depression and already depressed I feel worse. Do you think I should talk to my dr about it what do you think?