If there is no concrete reason for your despondency, then, yes, it probably is hormonal. When I was peri-menopausal, my emotions would sometimes be in a black pit of despair for no reason at all -- and I had a devil of a time getting out again. However. Since I have emerged on the other side of menopause, I don't seem to get depressed anymore. The thought that would help me immensely when I was in that pit, though, was the realization that everything is a cycle. I had been in that pit before, and eventually I reached the bottom and began my ascent to higher, happier realms. It would almost certainly happen that way again, ad infinitum. Reaching the bottom would actually make me feel incrementally happier because I knew that it meant that my mood would be lightening from that point on.