I am 53 (female) and have been taking Lipitor for about 5 months....

I am 53 (female) and have been taking Lipitor for about 5 months. I haven't read the whole list below, but is anyone having problems with mental clarity and thinking that it might be related to the Lipitor.? I am experienceing short term memory loss and mental confusion. My M.D. is sending me for a brain MRI this week. While I don't fear this is early dementia, I am beginning to think it might be a side effect of the Lipitor. I stopped taking the Lipitor 7 days ago and it seems I am more clear minded. I have felt a general overall "puffiness" since starting the Lipitor. This combined with the mental clairty issues are making be suspect of the Lipitor. I also am experience an overwhelming fatigue. This too seems to have lessened since stopping the Lipitor. My M.D. just stares at my blankly! I am starting to think I am really loosing it. Anybody having similar reactions? Thanks for any responses!