I am a little paranoid. I have been having periodic episodes of depression where my energy level is very low. I almost did not make it into work a few days ago.. I have been having frequent problems putting sentences together. I have to push myself to do something, even that which I find interesting and wish I could do. I find myself getting agitated over little things, including my hands shaking allot. I have episodes of feeling like crying, and sometimes do. The pain I feel.

Is this bipolar depression?