Mom, I think you are confusing whole wheat bread and whole grains. Whole wheat bread is not a whole grain, it is highly refined wheat, mixed with yeast/sugar/salt/water and made into bread. Examples of whole grains are quinoa, millet, brown rice, barley, oats, rye, spelt, etc. If you eat the bread then crave more afterwards, it will end up sabotaging your diet. Also, you said you still want to lose weight, and I am not sure that adding back bread at this moment in your process is going to help with weight loss. Bread is basically empty calories that raise your blood sugar.
On another note, here is a site I found on the GI of different sugar products