Zocor and dull pain

I am a 47 year old male who had a heart attack in march of 1993. I have had angioplasty three times with stent implants during the last two procedure's. My primary care physician thought it would be to my benefit to take Zocor. I have been taking 20mg a day for the past 4 years. During the past few months I have been having pain in my right elbow and lack of strength in my arm. I also have been having a steady dull pain in my right leg which runs from my thigh down through my knee and calf. I have had liver function tests done once a year because of an earlier bout with hepatitis and alcohol abuse, but the tests show that my liver is working fine. Does this sound like it could be a side effect of the Zocr?