If you are nursing, you have an even greater chance of having deep postpartum depression.
I found that it was all physical -- not psychological -- even though I was in the pit of hell.
Vitamin b complex 100 with choline for the brain is the best remedy and will bring you out of it within 3 days. Solaray puts out a good one in capsule form.
Take 3 per day for 3 days and then cut back to two for about a month. It's a really good thing to take one capsule each day for the rest of your life because it will keep you happy, trim, and fit.