I just started Lithium a week ago and I have never felt so awful on medication in my life. I feel extremely tired, uncoordinated, a little depersonalized, and just plain foggy. I can't function at all. Not even a little. I even went to the ER yesterday because I felt so awful, but they told me my levels are fine and I'm just having adverse side effects. Has anyone else experienced this on Lithium? Does it get better? Soon?