Why not see a therapist. There's stuff out there with lots of claims like St John's wort, but, unless you have a chemical imbalance that could be genetic in nature, my opinion is that most depression is related to environmental stress, something as simple as everybody faces just growing up, bringing up old feelings that have been long suppressed. I would say that depression really is suppression of feelings, the awakening of feelings that are taboo like, for one example, feeling anger toward some authority figure. That was a big no no. We have all been profoundly conditioned to do as somebody else says. Growing up is all about making our own decissions after years of being taught not to trust our own decissions. It's why people so easily become sheeple and look for some new or alternate old outside authority, the church, the state, a husband or wife, to make our decissions for us.
Anyway, if you find that things get worce, it might be worth finding out what you feel. In the mean time I can only say that there are no feelings that it's not ok to feel in a theraputic setting. We have been made to believe in a lie, that there is something wrong with us, that our feelings are unacceptable and we must not feel them. The relief that can come from decreasing the fear of our feelings is tremendous. Life is feeling and to suppress the negative is to suppress everything.