I have been on Lipitor 7 years plus and lately my arm muscles ach...

I have been on Lipitor 7 years plus and lately my arm muscles ache so bad I thought it was artritis or something. Took all kind of OTC meds and rubs. heat and ice wraps and to no avail did this help. I finally called the doctor and they told me to come off the lipitor for about 2 weeks and call then back with my symptons. It has only been 1 day now but found this site and want to know could the muuscle ache been from Lipitor? I mean I have been on it for so long now you would think my body would be use to it. I can't even hold my arm up over my head and it hurts so bad.