Natural remedies for excessive worry/anxiety and depression?

I am suffering from post partum depression and the Percocet really makes me relax and feel like I have hope. I was given it for my c-section. I was wondering if there are any natural things I could take that could have a similar effect. Not anything bogus or fake, but something that actually helps with depression and anxiety. Something to make me relax. Any help is greatly appreciated I want to enjoy my little boy!