Baseball game symptoms and conditions

I've been on lipitor and other generic forms of it for the last 8 years since the age of 26. I started on 10mg then 20mg and later 40mg. About 4 years ago I started with severe stomach cramps. The pain is so bad that I have to go home in the middle of the day, I can't walk or sit straight the pain is that bad and NOTHING helps. On a scale of 1 to 10 I would probably put this at a 7 or 8. I would also be nauseous and be really tired. I have had countless opinions and tests done and doctors keep telling me it is an "enigma" and there's nothing wrong with me. We've treated it through coeliac diet, exercise, lots of water, but it never helped. About a week ago I stopped drinking my meds by pure chance. I have not had one incidence of stomach ache. My doctor tells me that it's not possible for the lipitor to be the cause. I am sure he's wrong. Has anyone had a similar experience?