Lipitor and muscle twiches

I have been on lipitor 10mg for about 6 mths (after reacting to lipex with severe hip pain and going off that). Am now experiencing abdominal pain, severe headaches, excruciating neck pain and to top it off a droopy eyelid and loss of extreme peripheral vision after a bout of flashing auras and fluid like waves in the outer edge of my eye. After tests my retina is not detaching so what is the cause then. My cholesterol is high when not on lipitor and am wanting to lower it without drugs. I could do with losing 10kg weight but will that bring down the cholesterol. I walk every morning for 30-40 mins. Diet is healthy, a few junk things each week but not overly so.