I think I was suffering from lithium toxicity, so I stopped taking the drug -- when will I feel better?

I always feel feverish, but the thermometer doesn't say I've got a fever. . . I'm always tired, kind of depressed and often nauseous. Is this because of liver issues resulting from the drug> do you think I'll ever feel better?

I've been off the drugs for about three weeks, so I'm hoping soon. . .

Any information is greatly appreciated.