How long ago did you stop lithium? When I stopped it abruptly about 3 months later I had a weird, agitated but not mixed, depression thing. Apparently if you stop lithium, especially abruptly, you can get this rebound depression thing around 3 months later. I wound up back on lithium and then added lamictal back for an additional boost. I'm not sure how you handle it drug free; I never asked. I don't have a link, its been too long, but it did happen to me and my pdoc was aware of the issue.