Cyberspace symptoms and conditions

Been on Zocor for two years went from 20mg to 40mg and since being on the 40mg I have increased leg & foot cramps so severe @ night that I have trouble getting out of bed, the foot locks up. Even getting up after sitting is a problem, sometimes my feet and legs go numb and I even fell a few times. I get very tired during mid day. The newest problem is my sight, I have notice that there is a blurriness that I don't know if it ever clear up, after telling my doctor this she said it was the arthritis and to take arthritis nonasprin and to stop the zocor for about a week, I am going to stop period.