I'm 46, I've had mild depression all my adult life but have been stable and settled on a low dose of Prozac for years. Lately, though, I find my moods really mercurial: one day I'm happy as a clam, the next I feel... not quite despondent but as though there's little kindness in the world. Sometimes the sun coming out can be enough to cheer me up and likewise an overcast day can mean I'm gloomy. I have other peri-menopause symptoms, so is this likely to be another of them? Thanks for reading.