Have you been feeling like this for weeks now? Have you been to see a doctor about how you're feeling? I suffer from depression and the feelings you're describing sounds a lot like how I feel without my anti depressants. The right meds in the right dose helps lift the weight of my depression and gives me space to start dealing with things.
Remember that what you're feeling will pass eventually. I had a hard time realising that I would be happy again one day when I was in the midst of my blackest days. I believed I would feel like that forever. This kind of thinking leads to suicide - please seek help before then!
