commercial organic yogurt a problem?

I eat a lot of commercial whole milk organic yogurt (several servings a day) and am wondering if it is contributing to some of my health problems (hormonal migraine and low back pain and stiffness). I suspect liver/gallbladder problems and am working on that with herbs and flushes, but no improvement yet. Could it be that yogurt from pasteurized homogenized milk is stressing my digestion/liver? Anyone have improvement in health by getting a better source of yogurt or dairy in their diet? I have tried going without the yogurt or making my own from non-homogenized (but pasteurized) milk, but no improvement in a few days' time anyway. Just seems I have tried so much of what NT says and can't find improvement over these symptoms. I also drink kefir daily (from the non-homogenized, pasteurized milk).