Muscle Pain

Have been noticing muscle pain.  Usually isolated in one arm/leg. At first I wondered, did I over use it?   And then I forget about it or it goes away.  This morning it was my right arm.  During work it shifted to my left arm.  And then to my right thigh.  Then gone again.  I'm thinking this may be a side effect of the cholesterol med. Lipitor.   I don't like that medicine at all.  Want to get off it asap.