TLC is a marker which indicate your white blood cell
count. If any infection occurs in your body then these white blood cell (WBC) fight with the cause(bacteria, virus etc) so their level rises. It actually protects you. So its rise indicates that you have some short of infection in your body. So the doctor gave you the antibiotic (CLAVUM & MEROPENEM) which will kill those bacteria. Dont worry it will come back to normal when the infection will be subsided.
Have you done DLC/DC- neutrophil
, basophil, monocyte, eosinophil
that can be helpful in proper understanding.