I fell asleep . Just woke up , still no shit . Damn this is depressing . <| sep |> Anxiety is really something that feeds on itself . You are a little nervousthink something may be wrong so your heart starts beating a little faster , your muscles tense up . You become hyper aware of stuff like your heartbeat , small pains in your body , etc . Of course , now that you ' re starting to get anxious , there ' s more of those negative things to notice and eventually it can reach a point where you ' re in a state of serious panic and considering all the worst possibilities . It ' s pretty unlikely that taking 1 mg of B 12 a day could cause an issue like this , let alone 20 days after you discontinued use . I suppose it is possible that the extra energy from B vitamins or other things you did at the time or perhaps even randomly pushed you into something like a hypomanic episode . Probably the best thing to do at the moment is rein in your thoughts whenever you find yourself focusing on stuff like your heartbeat and worrying , distract yourself by doing something else . Take slow , deep breaths .