I'm unhappy, sorrowful, dejected, depressed, downcast, miserable, down, despondent, despairing, disconsolate, desolate, wretched, glum, gloomy, doleful, dismal, melancholy, mournful, woebegone, forlorn, crestfallen, heartbroken, inconsolable;
tragic, unhappy, unfortunate, awful, miserable, wretched, sorry, pitiful, pathetic, traumatic, heartbreaking, heart-rending, harrowing