I had a heart attack july 4th 2002, one stent was put in , i took...

I had a heart attack july 4th 2002, one stent was put in , i took zocor for sbout a year I became unable to work in june 2003, my insurance expired, I go to the free clinic, they give me lipitor, I been taking it for a little over a year, it keeps my chol. level in check, I have been to the emergency room 3 times for violent muscle spasms under my ribs,,,,,,very scary the doctor told me today it may be the lipitor, anybody else had these symptoms? please reply?