For months now I've been having 1-3 day depressions about every 2 weeks. They come out of nowhere and are very severe - I cancel all social plans, skip school/work, isolate completely, cry all day, and think about nothing but death. Each time I feel I've been hit by a bus...and then, out of nowhere again, gone.

It's hard to believe that this could actually be bipolar because it's so short. But it's very constant and feels the same every time. What else could it be?? It's ruining my friendships, straining my marriage, and completing disrupting my work.