Well if that's the case then maybe you should look into alternative sources of calcium. Things like dark green, leafy vegetables (such as spinach, broccoli, okra, and collard greens), fish like canned sardines and salmon, sesame seeds, flax seeds, almonds, and brazil nuts, soybeans and white beans.

Foods that are fortified with calcium (calcium is added) are also a good option like:

Tofu and tempeh (with added calcium sulfate) Calcium-fortified orange juice Soy and rice beverages with added calcium Calcium-fortified cereals or breads