My daughter is 9hlf mnths old, an very energetic (no sugar in her diet), she's strtd wlkn alrdy an understnds words, etc. My concern is. She never sit still an has a temper when I stop her from playing with dangerous Objects, she would throw herslf bck. An scream an somtimes bang her head against the wall... Is this nrml? her doctor says she's jus full of energy but I am I feeling so drained...