Have you thought about trying St Johns Wort? I take that sometimes over the winter and find it good. I read somewhere too that 15 mins aerobic exercise a day can really help with low mood...and yoga is good too.
I also found the book 'healing without freud or prozac' useful.
Maybe have a chat with your doctor, see what they think?
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus