Purplelily, I cannot imagine having my kids taken away, so you HAVE experienced a HUGE loss.
People who tell you to "snap out of it" or say that it's "just a phase" are totally ignorant and have never been depressed. It would be nice if they would read up on depression before they open their mouths! Saying things like that can hurt, especially when you're already having a terrible day! It also makes you angry -- and I don't know about others, but there have been times I've wanted to snap someone's head off after they said something stupid like that.
You are NOT a failure -- pulling yourself out of a deep depression is difficult to say the least! Won't your doctor put you on antidepressants? I know they're expensive, but many manufacturers will offer help with paying for them or even sometimes giving them to you for FREE. check with your doctor -- or your doctor could give you samples if you let him know your financial situation. Just be honest with him. But you DO need an antidepressant! There's no need to live like this if you don't have to! Talk to your doctor, okay?
Let us know what happens, too. Big hugs, Lee