Postpartum blues

I am going through postpartum depression 4 weeks after the birth of my first son. My aunt has recommended that I take fish oil tablets because she says they are helpful for postpartum depression. She gave me some to try but I stopped yesterday after only a day or so because they were giving me the worst fish gas burps (sorry…gross, I know.) Does fish oil work against postpartum D? Is there another source of the fatty acids that works that does not cause the gross side effects?