If there is a gallbladder stone present, then you might experience pain in the upper right abdomen. The pain might become more intensive after eating food rich in fat. If the gallbladder stone did not inflamed the gallbladder yet, then your CBC might still be normal. Also, always take into consideration that the results of the CBC might sometimes be wrong. Diagnose is never given based only on laboratory tests. The physical exam is more important, and the laboratory tests are there only to confirm the diagnose or to rule it out.