Postpartum depression

Almost 3 more postpartum and my depression is hitting hard. I was up everyday sad, don’t wanna do anything and to the point I could breakdown and cry. I did speak to my doctor when I went for my 2 week and 6 week check up. She did put me on something but I finished it 2 days ago. I’ve been getting mad at everything and fighting with my husband over the dumbest stuff. I don’t know what go do.