Hi there- I know what you are going through and having depression makes everything so much harder. My dd is 5.5 months now and I finally decided when she was 4 months to take Zoloft. I was suffering from postpardum and have always been dealing with depression on and off my whole life. I am taking Zoloft and BF and it has helped so much. I feel better. i would feel better if my dd would just sleep a little longer at night...LOL.
Maybe you can get dh to help after you get home from work to take a break - take a long bath or go out for a walk. You need some time for you without having demands and pressure put on you. Be easy on yourself and know this will pass