question: I am taking Calcium with Magnesium and Vitiamin D3 since I am taking reflux Meds (precipation) from my doctor which is Pantoprazole Sod. DR Tabs- 40Mg twice aday. Since I have taken this for two weeks, my stomach is hurting all the time. Could it be the Calcium ,Magnesium, VitiaminD3 causing this problem. I also have IBS and diverticiulitis.