That is how I get with depression, usually when it is at a moderate degree. I was feeling that way for a few months in a row Fall-Winter. Sometimes meds make me a little "flat" and unmotivated though, so my pdoc, Therapist, and me had to work on distinguishing what was depression, separately from what was causing some side effects. When depression is more severe in me, I will cry about everything, withdraw from people and things, I start feeling that there's no point anymore, and it's like a dark tunnel where I cannot see the light. That's the worst.

I agree with the above though, you might want to double check if any med adjustments are needed. In my case, when I was feeling that way, some tweaking helped me go back to being more animated, more like myself. I didn't feel as lifeless anymore, even with some signs of depression.