I had a severe head injury and it made my depression worse. I was on Effexor and it stopped working. Dr. put me on Lithium and Lamictal which had side effects I couldn't live with. According to what I've read, Pristiq doesn't have any of the same effects. I have no energy, no get up and go, no desire to go anywhere and unless I have to get up and go to work, no nothing. any answers?